Sep 28 2016nbsp018332The amazing colorchanging stone alexandrite was discovered in 1830 in the Ural Mountains in Russia and named after Russian tsar Alexander II in recent years a couple of mines in Myanmar have.
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One of the advantages of beryl is its wide color range These crystals show pastel shades aquamarines green and blue and morganites pink photo credit Alan Jobbins Like many gems found in pegmatites morganite can form large crystals Miners in Brazil have found crystals as large as 22 lbs 10.
The prized turquoise veins of the Serabit elKhadim and Wadi Maghareh mines have yielded breathtaking stone specimens since 3000 BC The Wadi Maghareh is believed to have been only 25 miles from an ancient temple dedicated to the Egyptian goddess Hathor She is heralded as the goddess of the turquoise sky beauty joy motherhood fertility.
The size of the crystals is up to 27 mm long but in Dak Nong Ngoc Yeu and Da Ban areas they sometimes reach 3040 mm in diameter Their colour is usually dark blue sometimes green blue sky blue and rarely honeyyellow except in the Tien Co area in Binh Thuan province Several mining district were exploited from 1985 to present These.
Bisbee turquoise is famous for its deep blue color and smoky black matrix Most of this turquoise has already been mined so it is a highly collectible variety of turquoise Stone Mountain is a small mine in Northern Nevada The mine produces a fine hard gem grade turquoise with colors ranging from a variety of greens to a medium blue.
The Kingman mine in northwestern Arizona was one of the largest turquoise mines in North America The terms KIngman or high blue refer to the blue color usually displayed in this stone It has become a color standard in the industry The mine became famous for its rounded bright blue nuggets with a spider web black matrix.
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This stones color range includes yellow brown orange blue green pink and clear Topaz is considered the birthstone for November along with citrine Unakite Unakite is a marriage of olivegreen Epidote red Jasper and speckles of pink Feldspar.
A mine at Atago Mountain its known to produce large clean whetstones from the Chuishi naori word is also used to refer to any pronounced splashes of color on a stone Yakiba Translation Grilled Blade This is a sword term it refers to the hardened tempered area from the.
Tanzanite is a trichoic stone that reflects different colors ranging from light blues or lilacs to deep indigos and violets It was discovered in the 1960s and named after Tanzania by Tiffany amp Co.
Alexandrite Gemstone is a rare variety of the mineral Chrysoberyl amp is a strongly pleochroic gem Colorchanging alexandrite is natures magic trick.
The mines name comes from the mountain the mine is located in which from far away looks like a sleeping woman lying on her back with her arms crossed Larimar Stone Larimar Stone Larimar also called Stefilias Stone is an extremely rare gemstone found only in a mountainous and hardtoaccess region of Barahona Dominican Republic.
Mine Owner Land Status Work Type Minerals Arenac Co Pit 1 Re Glancy Arenac Co Road Comm County Stone Crushed Arenac PitBessinger Co Rd Comm Bay Co Road Comm.
Though Elbaite occurs in all color forms the term Elbaite in the gemstone trade is sometimes used to describe the green form of Tourmaline The other color forms of Elbaite have their own variety names on the gem market Traditional Tourmaline gemstone variety names include Rubellite the red or pink variety Indicolite the blue variety and Watermelon Tourmaline a multicolored Tourmaline.
The mines are all located in an area of about eight square miles in the Merelani Hills near the base of Mount Kilimanjaro and the city of Arusha The color of a finished stone will vary depending upon how the table of the stone intersects the crystallographic axes within the rough.
THE FORMATION AND COLORS OF TURQUOISE Chemically the mineral turquoise is a hydrous basic phosphate of copper and aluminum It is formed when water of the right chemistry trickles through a host stone over many many centuries gradually leaving behind a turquoise deposit.
May 31 2019nbsp018332The Argyle mine in Australia is the bestknown mine in the world for producing diamonds colored by graining defects About 80 of the diamonds produced at the mine are brown in color Argyle is also the worlds most important source of diamonds with a pink or red natural color The mine usually produces a few hundred carats of pink diamonds per.
The more saturated the color the more valued the Fancy Color Change gemstone becomes however an inky or muddy stone becomes undesirable a Fancy Color Change Sapphires clarity can also affect the apparent tone Color is the single most important factor in determining the value of for any sapphire.
Turquoise mines are generally located in the arid regions of the world commonly in places that have been either altered by volcanic activity or along side copper zinc or gold mines The United States China Mexico Iran and Egypt are known for turquoise mining The United States is a primary source of quality natural turquoise.
Nevada is home to more mines than Arizona California Colorado and New Mexico put together The better known localities include the following Blue Gem Mine large variation in color noted for blue and green colors in the same stone Fox Mine huge production active since 1915.
People need to earn a decent wage as in any other industry Much of the colored stone mining done in other parts of the world is supported by very low cost labor There are also many costs associated with operating a mine in compliance with government regulations A significant investment must be made in safety planning equipment and procedures.
The Cerrillos mining district lies north of the town of Los Cerrillos It is one of the nations oldest mining areas and is a famed source of turquoise The district is known for its interesting historical ruins dating from prehistoric times to the early 1900s The Mount Chalchihuitl turquoise area is a few miles north of Cerrillos Turquoise Hill is 5 miles further north near the highway.
Actinolite is green to grayish green mineral of the amphibole group found in metamorphic rocks It sometimes has a fibrous texture that produces a strong catseye Almandine garnet also known as quotalmanditequot is an ironrich redtopurple garnet that is geologically very common and typically sells.