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Gem & Jewelry Articles from JOGS

Citrine April 19th, 2012

Other Names: “stone of the mind” Origin of Name: Latin word “citrus” Meaning of the Stone: November Birthstone Classification: semi-precious Family: Quartz Region: Brazil, USA, Madagascar, Russia, Czech Republic, Spain, France Color: yellow, lemon-yellow, orange-yellow Transparency: transparent-translucent Fracture: conchoidal to uneven Hardness (Gravity): 7 (2.65) Crystal System: trigonal Similar Minerals: amethyst 1. Legend and History:… Read More

Chrysoprase April 19th, 2012

Other Names: prase (reference to darker varieties) Origin of Name: Greek chryso meaning gold and prassino meaning green Meaning of the Stone: Gemstone of Sagittarius and Scorpio Classification: semi-precious Family: cryptocrystalline silica Region: USA,Brazil, Australia, Tasmania, India, Russia, Kazakhstan Color: emerald-green, blue-green, light green Transparency: transparent to translucent Fracture: conchoidal Hardness (Gravity): 6-7(2.50-2.70) Crystal System:… Read More

Chrysocolla April 19th, 2012

Other Names: Origin of Name: Greek words “chryso” and “colla” which means gold glue. Meaning of the Stone: Gemini Strasign Classification: semi-precious Family: silica mineral Region: USA, Mexico, Peru, Canada, South Africa, Congo, Zimbabwe. Russia Color: blue-green, blue, emerald green, turquoise Transparency: Translucent to Opaque Fracture: Sub-conchoidal, uneven Hardness (Gravity): 2.5-3.5(1.9-2.4) Crystal System: Orthohombric Similar… Read More

Chrysoberyl Cat’s Eye April 19th, 2012

Other Names: Chrysolite Origin of Name: Greek “chryso” meaning gold, and beryl Meaning of the Stone: Gemini starsign Classification: precious Family: Oxide Mineral Region: Sri Lanka,India,China,Madagascar,Zimbabwe, Brazil,USA, Color: colorless, yellow,gold,brown,golden-brown Transparency: Translucent,Transparent Fracture: Conchoidal to uneven Hardness (Gravity): 8.5( 3.68-3.80) Crystal System: orthorhombic Similar Minerals: alexandrite,cymophane 1. Legend and History: Chrysoberyl received its name from… Read More

Chrysoberyl April 19th, 2012

Other Names: Chrysolite Origin of Name: Greek “chryso” meaning gold, and beryl Meaning of the Stone: Gemini starsign Classification: precious Family: Oxide Mineral Region: Sri Lanka,India,China,Madagascar,Zimbabwe, Brazil,USA, Color: colorless, yellow,gold,green,brown,golden-brown Transparency: Translucent,Transparent Fracture: Conchoidal to uneven Hardness (Gravity): 8.5( 3.68-3.80) Crystal System: orthorhombic Similar Minerals: alexandrite,cymophane 1. Legend and History: Chrysoberyl received its name from… Read More

Chrome Tourmaline April 19th, 2012

Other Names: toramelli,thuramali Origin of Name: Toramelli, from the Sri Lankan dialect Meaning of the Stone: Pisces Zodiac sign Classification: semi-precious Family: Cyclosilicate Region: Brazil, Italy, Czech Republic, USA, Afghanistan,Mozambique, Madagascar,Russia Color: colorless, green, dual colored Transparency: translucent to opaque Fracture: conchoidal to uneven Hardness (Gravity): 7-7.5(3.02-3.41) Crystal System: Trigonal Similar Minerals: amethyst,chrysoberyl, sapphire,ruby,topaz,zirkon 1…. Read More

Chrome Diopside April 19th, 2012

Other Names: Siberian Emerald Origin of Name: Diopside derives from Greek, meaning two faces, Chrome refers to the ingredient Meaning of the Stone: Zodiac sign of the pisces Classification: semi-precious Family: Silicate Mineral Region: Russia,Cuba,Kenya,Madagascar,new Zealand, Australia,Japan,Finland,Romania Color: emerald green Transparency: transparent,translucent Fracture: Conchoidal, irregular Hardness (Gravity): 5.5-6.5( 3.17-3.32) Crystal System: Monoclinic Similar Minerals: Emeralds… Read More

Chocolate Opal April 19th, 2012

Other Names: Ethiopian Opal Origin of Name: Chocolate color of gemstone Meaning of the Stone: Classification: Precious Family: Mineraloid Region: Ethiopia Color: Brown, with colorful specs showing all around Transparency: translucent to opaque Fracture: Conchoidal-uneven Hardness (Gravity): 5.5-6.5(1.98-2.25) Crystal System: Amorphous Similar Minerals: Opal,Agate,Onyx,Chrysopase 1. Legend and History: Chocolate Opal, or also known as Ethiopian… Read More

Charoite April 19th, 2012

Other Names: Origin of Name: It’s name originates from the Siberian river Chara Meaning of the Stone: Classification: semi-precious Family: silicate mineral Region: Russia, Yakuita Siberia (it is found in only one region) Color: light to dark purple, violet, sometimes blue-purple Transparency: Translucent Fracture: Conchoidal Hardness (Gravity): 5-6(2.54-2.68) Crystal System: Monoclinic Similar Minerals: sugilite 1…. Read More

Chalcedony April 19th, 2012

Other Names: Origin of Name: Ancient Greek Town in Minor Asia, “χαλκηδονα” Meaning of the Stone: Capricorn Zodiac stone Classification: semi-precious Family: Oxide Mineral Region:USA,Austria,Czech Republic,Slovakia, Saudi Arabia, Canada,Mexico,Iceland, Russia,Brazil,Morocco Color: pink, blue, red, green, gray, white, yellow,black [note that there are several stones belonging to the chalcedony family, thus more colors exist, and some… Read More