Our Earth's Geology, Minerals & Gemstones
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Our Earth's Geology, Minerals & Gemstones
Sharing our passion through colorful articles & pictures inspired by nature's amazing creations.
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Young Earth May Have Had Tectonic Plates, Not Hellish Magma Oceans - 80beats

Young Earth May Have Had Tectonic Plates, Not Hellish Magma Oceans - 80beats | Our Earth's Geology, Minerals & Gemstones | Scoop.it

"Tiny crystals found in an Australian rock formation may be the key to understanding what earth looked like in its very earliest days, researchers say; a new study of 4-billion-year-old crystals seems to indicate that our planet already had plate tectonics, and may have looked much like it does today.


Little is known about the so-called Hadean or the ‘hell-like’ period of Earth’s history, which spans the time from Earth’s formation 4.6 billion years ago until about 3.8 billion years ago. The best geological clues of this era come from hard minerals called zircons, which have survived weathering and can be found within younger rocks."


"The early earth, however, is starting to shape up in the imagination as a relatively pleasant environment, although it was barren of life and considerably hotter than humans could tolerate" ... Article to be continued.


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*Thanks to www.thecanyon.com for the cover image.

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The Best Opal in the World: Virgin Rainbow ~ZME Science

The Best Opal in the World: Virgin Rainbow ~ZME Science | Our Earth's Geology, Minerals & Gemstones | Scoop.it

'An Australian museum is opening a fantastic opal exhibition, featuring what is quite possibly the best opal ever unearthed.'


'Estimated at over $1 million, the outstanding psychedelic specimen has an amazingly rich color palette and light refracting qualities.


The opal will be exhibited as part of the museum’s larger “Opals” exhibition, which celebrates 100 years of opal mining in South Australia – the area that supplies 90% of the world’s opals. Ironically, the area that used to be covered in waters and riddled with marine dinosaurs is now a hot, barren wasteland.


“It is ironic that in the most harsh of terrains the most beautiful of naturally occurring gems are now found,” says Brian Oldman, the director for the South Australia Museum.


“This is an exhibition literally millions of years in the making because these opals were formed back when dinosaurs walked the Earth and central Australia was an inland sea.” '...Article to be continued


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How To Clean Rhodium Plated Sterling Silver Jewelry ~Bellatory.com

How To Clean Rhodium Plated Sterling Silver Jewelry ~Bellatory.com | Our Earth's Geology, Minerals & Gemstones | Scoop.it

'The basics you need to know about rhodium plated sterling silver jewelry and how to clean it to keep its sparkling beauty for a long time.'


"Rhodium plated sterling silver jewelry requires special care and maintenance. Therefore, it is worth knowing what your jewelry is made of so you can give them proper care to maintain its beauty for a long time.


What does rhodium plated sterling silver mean? First, sterling silver is an alloy (or mixture) of silver consisting of 92.5% silver and 7.5% other metals. Silver sterling is identified by the number 925 (often stamped onto jewelry items). Silver, which is 99.9% pure silver or fine silver, is too soft and unsuitable for manufacturing jewelry. It is therefore alloyed with other metals to give it strength.


Rhodium is a hard durable precious metal of the platinum family. Rhodium plating (electroplating) is usually done to prevent scratching or tarnishing, protect the underlying metal, give the jewelry a white and shiny appearance and make it durable. Rhodium plated sterling silver is therefore jewelry (earrings, rings, necklaces, chains, etc) made from sterling silver plated with a small outer layer of rhodium that also gives that shining and sparkling appearance. Learning how to clean your rhodium plated sterling silver will prolong its sparkling appearance. " ...to be continued.


To Read More Click on The Cover Image


*Thanks to www.goldstandardny.com for the above image.

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10 Kaleidoscopic Images of the Stunning Arizona Antelope Canyon -WhereCoolThingsHappen

10 Kaleidoscopic Images of the Stunning Arizona Antelope Canyon -WhereCoolThingsHappen | Our Earth's Geology, Minerals & Gemstones | Scoop.it

'Vibrant contrasting images of the famous Arizona landmark. Beautiful blue, red, violet and orange diffuse in spectral coloring.'


"Not many stories need to be told about this unique product of nature. It is included in most of the lists and guides about U.S. nature sceneries.


Thousands of visitors come to see the Antelope Canyon Arizona each year and admire of the fine nature architecture and the canyon hollow passages painted with iridescent colors.


The mineralized soil plays with the light reflection painting the most beautiful spectral vibrancy. In Navajo language the Antelope Canyon is known as “The place where water runs through the rocks”.


Sometimes the contrast of Earth elements is so startling that tourists have the chance to observe surreal beauty when they walk the secret tunnels. Have you visited the Antelope Canyon?"


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What If We Ran Out Of Minerals? ScienceHowStuffWorks

What If We Ran Out Of Minerals? ScienceHowStuffWorks | Our Earth's Geology, Minerals & Gemstones | Scoop.it
"Minerals are substances formed naturally underground — think coal, quartz, salt. Like everything else, they're made of elements, basic substances that can't be broken down into simpler substances. Some minerals are single elements, like gold.

When we're assessing amounts of minerals in the world, it's more complicated than there being a finite amount of resources that we're using up over time. World mineral reserves are constantly revised based on estimated consumption and current production abilities. For example, in 1950, the estimated copper reserves totaled 100 million metric tons. Over the next 50 years, world copper producers extracted 339 million tons — by 1950 standards we should have run out of copper three times over.

For most minerals, supplies have actually increased during the 20th century even though we're using them up faster than ever"... to be continued

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Credit to www.emaze.com for the cover image.
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Unbelievably Gorgeous Galaxy Confectionery will Transport you to a Far Universe -WhereCoolThingsHappen

Unbelievably Gorgeous Galaxy Confectionery will Transport you to a Far Universe -WhereCoolThingsHappen | Our Earth's Geology, Minerals & Gemstones | Scoop.it
Wow, if you thought that there is a limit to making stellar sweets, we are here to break your imagination …
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Mysterious, Rare Red Diamond on Display -LiveScience

Mysterious, Rare Red Diamond on Display -LiveScience | Our Earth's Geology, Minerals & Gemstones | Scoop.it

'One of three existing red diamonds weighing more than five carats, the Kazanjian Red Diamond has almost a century of history behind it.'


"NEW YORK — Among colored diamonds, red is particularly rare, and mysterious, since no one knows for certain the origin of the color within the stone. One of the three known red diamonds weighing more than 5 carats (1 gram), an emerald-cut stone about the size of a small fingertip rests against a gray background in an American Museum of Natural History display case. This stone, known as the Kazanjian Red Diamond, has a dark hue resembling that of a garnet or a ruby, and in its nearly century-long history, it has been mistaken for the latter. The square-shaped diamond is about 0.39 inches (10 millimeters) on each side and 0.23 inches (6 mm) deep." ... to be continued


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Mineral Deposits Photo by Maria Vanesa Acuto — National Geographic Your Shot

Mineral Deposits Photo by Maria Vanesa Acuto — National Geographic Your Shot | Our Earth's Geology, Minerals & Gemstones | Scoop.it

'By the Squamish River banks, the surface of the water sometimes carried a thin layer of what it looks like an iridescent oily material. With the different lights it reflects a silvery, sometimes gold rainbow with various abstract forms. This mixed with floating leaves and other natural elements, offer a very creative source for abstract nature photography.'


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This is the oldest known piece of our planet - a 4.4 billion-year-old gem

This is the oldest known piece of our planet - a 4.4 billion-year-old gem | Our Earth's Geology, Minerals & Gemstones | Scoop.it

Using two different dating technique, geologists have come across what they believe to be the oldest piece of Earth discovered thus far.


The zircon crystal, found on a sheep ranch in Western Australia , was confirmed to be 4.4 billion years old and offers tantalizing clues and insights on how our planet must have looked like in its infancy. To put things into perspective, our planet is believed to have formed 4.5 billion years ago.


The geological relic indicates, for one, that Earth’s crust formed shortly after the planet stabilized and formed. John Valley, a University of Wisconsin geoscience professor who led the research, said the findings suggest that the early Earth was not as harsh a place as many scientists have thought.


No doubt, this is an extraordinary find, however, the untrained eye would have surely missed it. Measuring about 200 by 400 microns, or roughly two times the width of a human hair, the tiny gem was luckily retrieved by geologists in 2001 from a rock outcrop in Australia’s Jack Hills region. “Zircons can be large and very pretty. But the ones we work on are small and not especially attractive except to a geologist”


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Finally! Secret of Death Valley's 'Sailing Stones' Is Revealed

Finally! Secret of Death Valley's 'Sailing Stones' Is Revealed | Our Earth's Geology, Minerals & Gemstones | Scoop.it

'Scientists captured footage of Death Valley's sailing stones in action for the first time ever, revealing the secret behind their famous movements.'


'Years ago, researchers traveled to the Racetrack Playa with plenty of instruments in tow. They first installed a weather station and several time-lapse cameras around the playa. They also placed 15 GPS-embedded limestone rocks of various sizes throughout the playa.


'Then, it was time to wait. “As one of the other researchers on this project said, ‘Probably the most boring experiment ever,’” study co-author Jim Norris said in a video about the experiment. However, things got interesting in November 2013. In late November, significant amounts of rain and snow created a small pond in the south end of the playa. When December came, the GPS-embedded rocks started moving, with the heaviest weighing in at 35 pounds. The rocks reached blazing speeds of 9-16 feet per minute.


Most importantly, the race was caught on camera. So what caused the rocks to drag themselves across the playa?'...


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*Thanks to http://www.hqwalls.com for the cover image.



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Corundum: Use as a Gemstone, Abrasive, Refractory

Corundum: Use as a Gemstone, Abrasive, Refractory | Our Earth's Geology, Minerals & Gemstones | Scoop.it

"Corundum is a rock-forming mineral that is found in igneous, metamorphic, and sedimentary rocks. It is an aluminum oxide with a chemical composition of Al2O3 and a hexagonal crystal structure. The mineral is widely known for its extreme hardness and for the fact that it is sometimes found as beautiful transparent crystals in many different colors."


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Once Upon a Gemstone- Nautilus

Once Upon a Gemstone- Nautilus | Our Earth's Geology, Minerals & Gemstones | Scoop.it

For longer than recorded history, gemstones have been used to tell stories. Passed down through generations, they carry the legends of our ancestral past. They also carry with them a much, much older history: the geological echoes of our planet’s very formation. As shifts deep within the Earth’s core drove its tectonic plates, compression, heat, and chemical reactions created a new set of minerals, beautiful to the human eye.


Understanding that these were objects of record, of permanence, humans wove their own, new stories around them, making meaning from mystery.


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Labradorite ~ Interesting Gemstone and Their Properties

Labradorite ~ Interesting Gemstone and Their Properties | Our Earth's Geology, Minerals & Gemstones | Scoop.it
"Labradorite is a lovely everyday type gem with some sizzle. Named for Labrador, Canada, this gem is also found in Finland, India, Russia, Madagascar, and Newfoundland. Labradorite is often used in jewelry in faceted or cabochon forms. Color: Grey-Blue with flashes of Yellow, Gold and Green-Blue Properties & Characteristics:

Iridescent/opalescent play of color; Nearly all Labradorites of a certain size have "cleavage" lines that appear like cracks; these lines do not usually result in chips or breaking unless exposed to a particularly hard knock, like a drop on a hard surface. Treat these stones with care! Meaning: "The Stone of Spiritual Awakening"

Cousins: Spectrolite aka "Falcon's Eye" (a rarer, higher quality labradorite), Moonstone"

Read More At  https://bellatory.com/fashion-accessories/The-Interesting-Gemstones-Youve-Never-Heard-Of#
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How To Recognize Lab-Created Ruby, Saphire, And Emeralds ~Bellatory.com

How To Recognize Lab-Created Ruby, Saphire, And Emeralds ~Bellatory.com | Our Earth's Geology, Minerals & Gemstones | Scoop.it

"Some tips to help you distinguish between lab-created gemstones and naturally grown ones."


"Being able to recognize lab-created gemstones from natural gemstones will not only make it impossible for an unscrupulous jeweler to take advantage of you, but it will also ensure that you can make a conscientious choice between lab-created or natural gemstones.


There is nothing wrong with purchasing lab-created gemstones as long as the fact is disclosed to you and you make the purchase knowingly. What are lab-created gemstones? Lab-created gemstones are gemstones that have been grown in a lab as opposed to growing in their natural environment.


They are real gemstones and have the exact chemical composition as naturally occurring gemstones. A lab-created ruby or lab-created sapphire has the exact chemical composition as a natural ruby or natural sapphire harvested from a traditional mine.


They should not be confused with man-made gemstones which are synthetic and of course not real gemstones. If they’re chemically the same how can you tell the difference? When gemstones go through the natural crystallization process many other minerals and gasses may get captured within the gemstone, in addition, parts of the gemstone may not mate with other parts creating fissures.


All this creates within the gemstone what are normally called inclusions. Lab-created gemstones are created by simulating the high pressure and high heat needed for crystallization but excludes the extraneous mineral and gases found in nature. Since every aspect is controlled lab-created gemstones are flawless." ... Article to be continued.


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*Thanks to fieldgemology.org for the above cover image.

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Hundreds of prehistoric human footprints found near African volcano tell unique story ~ZMEScience

Hundreds of prehistoric human footprints found near African volcano tell unique story ~ZMEScience | Our Earth's Geology, Minerals & Gemstones | Scoop.it

"Right by the southern shore of a lake in Tanzania, only nine miles away from an active and menacing volcano which the locals call the ‘Mountain of God’, scientists have made a monumental find. Etched and preserved in flood sediments were some 400 human footprints which are anywhere between 12,000 and 19,000 years old. No other site in the world has that many ancient human footprints and given their prehistoric age, the Lake Natron footprints might one day paint a unique story of how early humans lived and died together.


The site was found by a local a decade ago but it took a couple of years before paleontologists got on the line. When Cynthia Liutkus-Pierce, an Appalachian State University geologist, finally arrived at Lake Natron, thousands of miles away from home, she couldn’t resist shedding a tear"


"Using the argon-argon dating technique, which measures the decay time of Argon-40 into Argon-39, the researchers found these ancient markings are at least 12,000 years old, as reported in Palaeogeography, Palaeoclimatology, Palaeoecology." ...article to be continued."


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Economists See Bright Holiday Season ~Gemological Institute of America~

Economists See Bright Holiday Season ~Gemological Institute of America~ | Our Earth's Geology, Minerals & Gemstones | Scoop.it

"While jewelry sales have been fairly flat in the U.S. this year, the National Retail Federation (NRF) is predicting a strong 3.6% increase for all retail in the coming holiday season. The NRF said consumer confidence is on the rise, jobs have become more plentiful and incomes have been climbing. All of these factors will push growth higher than the 10-year average of 2.5%.


Economists at financial institutions are even more bullish on the season, the Centurion newsletter reported. The accounting firms of Deloitte and PriceWaterhouseCoopers (PWC) both anticipate strong gains.


PWC is calling for a 10% increase, citing a consumer survey that also found consumers favoring independent stores and local brands. U.S. jewelry retailers could use the good news" ...to be continued


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Gold Forms During Earthquakes | Earth - LiveScience

Gold Forms During Earthquakes | Earth - LiveScience | Our Earth's Geology, Minerals & Gemstones | Scoop.it

" Earthquakes have the Midas touch, a new study claims.


Water in faults vaporizes during an earthquake, depositing gold, according to a model published in the March 17 issue of the journal Nature Geoscience. The model provides a quantitative mechanism for the link between gold and quartz seen in many of the world's gold deposits, said Dion Weatherley, a geophysicist at the University of Queensland in Australia and lead author of the study.


When an earthquake strikes, it moves along a rupture in the ground — a fracture called a fault."


"During an earthquake, the fault jog suddenly opens wider. It's like pulling the lid off a pressure cooker: The water inside the void instantly vaporizes, flashing to steam and forcing silica, which forms the mineral quartz, and gold out of the fluids and onto nearby surfaces, suggest Weatherley and co-author Richard Henley, of the Australian National University in Canberra" ... to be continued


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Strange Minerals From Siberian Mine Are Unlike Anything Found in Nature -Gizmodo

Strange Minerals From Siberian Mine Are Unlike Anything Found in Nature -Gizmodo | Our Earth's Geology, Minerals & Gemstones | Scoop.it

"From deep inside a Siberian mine, researchers have catalogued a series of materials unlike any others yet found in the ground. They do, however, bear a startling similarity to certain lab-grown materials that weren’t thought to exist in nature at all—until now."


'In the last few decades, chemists have been crafting a series of new materials in their labs called metal-organic frameworks, or MOFs. These materials are “molecular sponges,” capable of soaking up gases like hydrogen or carbon dioxide—even storing them for future use, like a cell. A new paper in Science Advances reveals that not only are these materials also found in nature, we’ve had them in our hands for over 70 years. We just didn’t know what they were.' ... to be continued


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10 Real Places On Earth That Seem Scientifically Impossible - Listverse

10 Real Places On Earth That Seem Scientifically Impossible - Listverse | Our Earth's Geology, Minerals & Gemstones | Scoop.it

"The Seven Wonders of the Natural World may have been named too quickly. Wonders like The Grand Canyon and Victoria Falls are certainly big, and anyone who sees them will surely be impressed—but sheer size isn’t enough to truly leave a person in awe. There are other places in this world, though, that are far stranger. Places that seem almost alien, as if they could only exist on a planet that evolved separately from our own.


These are places that scientists have had to struggle just to understand how they ever could have been formed. Places that will truly make you wonder—not just because they’re beautiful, but because they seem to follow scientific laws that don’t exist anywhere else on earth." ... To be continued


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New Meteorite Offers Clues About the Origins of Life on Earth -Gizmodo

New Meteorite Offers Clues About the Origins of Life on Earth -Gizmodo | Our Earth's Geology, Minerals & Gemstones | Scoop.it

"Opals are beautiful gemstones, supposed harbingers of bad luck, and perhaps the only thing to come out of Australia that won’t kill you. According to new research from a team of British researchers, however, they’re also adding some sweet bling to a meteorite recently found in Antarctica. Beyond looking cool, the opal-studded meteorite also offers new clues about the origins of life on Earth.



The findings, unveiled today at the 2016 National Astronomy Meeting, are important because opals are associated with water—their structure contains up to 30 percent of the precious, life-forming substance. The discovery of the opal-laden meteorite adds further fuel for the theory that water found its way to Earth on the backs of asteroids." ...to be continued


Read the full article by clicking the above cover image.


*Credit to en.wikipedia.org for the above photograph.

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Human-Driven Warming Started Nearly 200 Years Ago, Study Finds -LiveScience

Human-Driven Warming Started Nearly 200 Years Ago, Study Finds -LiveScience | Our Earth's Geology, Minerals & Gemstones | Scoop.it

'The signal of human-driven warming can be detected as far back as the 1830s, a new study finds.'


'To fully understand the warming of the planet that is being driven by human emissions of greenhouse gases, scientists need to examine the history of climate changes on Earth.


Hampering this effort is the fact that direct measurements of temperature and other climate data only go back to about the late 19th century. But by using records kept by the Earth itself, that history can be extended back hundreds or even thousands of years. In a study published Wednesday in the journal Nature, a group of researchers has knitted together such natural records — found, for example, in coral reefs, ice sheets and caves. They used those records to trace the thread of human-driven warming back to what they say is its beginning, nearly 200 years ago, when the coal-burning that took off with the Industrial Revolution was still revving up.'


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Uses of Gold in Industry, Medicine, Computers, Electronics, Jewelry - Geology.com

Uses of Gold in Industry, Medicine, Computers, Electronics, Jewelry - Geology.com | Our Earth's Geology, Minerals & Gemstones | Scoop.it

'Explore the many uses of gold in industry, medicine, computers, electronics, jewelry, dentistry, coins, space, art and more.'


'Of all the minerals mined from the Earth, none is more useful than gold. Its usefulness is derived from a diversity of special properties. Gold conducts electricity, does not tarnish, is very easy to work, can be drawn into wire, can be hammered into thin sheets, alloys with many other metals, can be melted and cast into highly detailed shapes, has a wonderful color and a brilliant luster. Gold is a memorable metal that occupies a special place in the human mind.'


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* Thanks to www.marketwatch.com for the cover image.

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GeoPicture of the Week: The Moon's Geology

GeoPicture of the Week: The Moon's Geology | Our Earth's Geology, Minerals & Gemstones | Scoop.it

'It’s absolutely baffling that we’ve reached a level where we can not only study the geology of the Earth, but also that of other bodies in the solar system – in this case, the Moon.


This is a false color mosaic constructed from a series of 53 images taken through three spectral filters by Galileo’s imaging system as the spacecraft flew over the northern regions of the Moon.


The different colors show the compositional variations in parts of the Moon’s northern hemisphere. Bright pinkish areas are highlands materials, such as those surrounding the oval lava-filled Crisium impact basin toward the bottom of the picture. Blue to orange shades indicate volcanic lava flows. Light blue areas are thin, mineral-rich sources associated with recent impacts. The monochrome band on the right edge shows the unretouched surface of the moon. The same image, using different color filters, can be seen below'


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The History of Gemstones in Jewellery - Jodie Gearing

The History of Gemstones in Jewellery - Jodie Gearing | Our Earth's Geology, Minerals & Gemstones | Scoop.it

"Gemstones have had a mysterious hold on mankind for as long as humans have been on the planet. Before written language or even the spoken word, there was jewellery. British archaeologist Archibald Campbell Carlyle said of primitive man, “the first spiritual want of a barbarous man is decoration.”


But jewellery is more than a mere ornament, a flash of cash or historical heirloom in a museum or gathering dust in a safe. Jewellery symbolizes so much more than that – it is a symbol of our separation from the animal kingdom and our desire to capture and appreciate beauty. Read on for a whistle-stop – and by no means all inclusive – history of the use of gemstones in jewellery, focusing on some of the most interesting and pivotal eras in jewellery history."


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20 Most Beautiful Minerals And Stones in the World

20 Most Beautiful Minerals And Stones in the World | Our Earth's Geology, Minerals & Gemstones | Scoop.it

"The world is beautiful certainly with its many ‘hidden’ treasures, like gems, stones and minerals. Uhh Minerals? Yes, minerals.


According to Wikipedia: “A mineral is a naturally occurring substance that is solid and inorganic representable by a chemical formula, usually abiogenic, and has an ordered atomic structure. It is different from a rock, which can be an aggregate of minerals or non-minerals and does not have a specific chemical composition”. Sounds boring?


Well It isn’t, it is actually quiet stunning, if you don’t believe us than be convinced by this awesome list of the 20 most beautiful stones and minerals in the world."


Read more: http://www.wherecoolthingshappen.com/20-most-beautiful-minerals-and-stones-in-the-world/#ixzz49xN8bzXQ

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