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chrysoberyl 2.77cts - 10x7mm

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Delivery time : 3 - 4 weeks Est. Delivery date : Apr 17 - Apr 27, 2024
Product Views: 1058
2.77 carats yellow natural chrysoberyl cushion 10x7 mm srilanka
chrysoberyl 2.77cts - 10x7mm

Chrysoberyl is basically an Aluminium, beryllium mineral with the chemical formula BeAl2O4. The name chrysoberyl was derived from the greek word chrysos which means gold-white spar. Chrysoberyls are basically yellowish-green, light green,green in color. The clarity ranges from transparent to translucent.In history chrysoberyls where also called as chrysolite. Another interesting property of the chrysoberyl is the cat’s eye effect.This cat’s eye effect is due chatoyancy.Chatoyancy is an optical reflecting effect caused by fibrous structure in the mineral.Due to this effect the mineral is also synonymously named as Cymophanite, which is cymophanit in German and cymophanita in Spanish. This effect is smooth and blazing like the ray on the eye of cat. Hence it is called as cat’s eye. This rough is mainly shaped into cabochon to showcase the effect completely.Another sub category of the chrysoberyl is the Alexandrite stone, which is  bluish green or green in daylight and changes color to red, raspberry red or purplish red in incandescent light. This is due to the chromium content along with iron and titanium. CIBJO is an international confederation of the national jewelry trade organizations. CIBJO declares that the color changing property of a chrysoberyl is named alexandrite. 

Chrysoberyl is very scarce because of the formation and it required a very specific geological condition and mainly a metamorphic environment. Russia is the major source for chrysoberyls and Other known traces occurred in India, Burma, Madagascar, Srilanka but none in par with the Russian Ural mines. Chrysoberyl is said to be the third hardest mineral on the Moh's Scale measuring 8.5. The refractive index is 1.74-1.77. The specific gravity of 

alexandrite ranges from 3.67. 

gempiece.com has a wide range of chrysoberyl cut, cabochons, cat's eye, alexandrite loose gemstones and also deals with custom jewelry for more than two decades. Please feel free to email us if you have any orders and we most warmly welcome you. We serve certificates from Gubelin, GIA- Gemological Institute of America, AIGS- Asian Institute of Gemological Sciences, Tokyo gem lab, GIT, GRS etc.


$199.00
  • Stock: In Stock
  • SKU: GEM22072277
  • Gem: C39
Product Views: 1058
Weight 2.77 carats
Size 10.25x6.69x4.65 mm
Shape Cushion
Color Yellow
Pieces 1
Clarity VVS
Treatment No treatment at all
Origin Srilanka
Lot type Single
Code 500-peegig

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Chrysoberyl is basically an Aluminium, beryllium mineral with the chemical formula BeAl2O4. The name chrysoberyl was derived from the greek word chrysos which means gold-white spar. Chrysoberyls are basically yellowish-green, light green,green in color. The clarity ranges from transparent to translucent.In history chrysoberyls where also called as chrysolite. Another interesting property of the chrysoberyl is the cat’s eye effect.This cat’s eye effect is due chatoyancy.Chatoyancy is an optical reflecting effect caused by fibrous structure in the mineral.Due to this effect the mineral is also synonymously named as Cymophanite, which is cymophanit in German and cymophanita in Spanish. This effect is smooth and blazing like the ray on the eye of cat. Hence it is called as cat’s eye. This rough is mainly shaped into cabochon to showcase the effect completely.Another sub category of the chrysoberyl is the Alexandrite stone, which is  bluish green or green in daylight and changes color to red, raspberry red or purplish red in incandescent light. This is due to the chromium content along with iron and titanium. CIBJO is an international confederation of the national jewelry trade organizations. CIBJO declares that the color changing property of a chrysoberyl is named alexandrite. 

Chrysoberyl is very scarce because of the formation and it required a very specific geological condition and mainly a metamorphic environment. Russia is the major source for chrysoberyls and Other known traces occurred in India, Burma, Madagascar, Srilanka but none in par with the Russian Ural mines. Chrysoberyl is said to be the third hardest mineral on the Moh's Scale measuring 8.5. The refractive index is 1.74-1.77. The specific gravity of 

alexandrite ranges from 3.67. 

gempiece.com has a wide range of chrysoberyl cut, cabochons, cat's eye, alexandrite loose gemstones and also deals with custom jewelry for more than two decades. Please feel free to email us if you have any orders and we most warmly welcome you. We serve certificates from Gubelin, GIA- Gemological Institute of America, AIGS- Asian Institute of Gemological Sciences, Tokyo gem lab, GIT, GRS etc.


Gemstone
Refractive Index 1.746 to 1.763
Mohs Hardness 8.5
Specific Gravity 3.69 to 3.81
Material Chrysoberyl
Birthstone Month June
SKU GEM22072277
Type Natural
Lot type Single
Shape Cushion
Weight 2.77 carats
Size 10.25x6.69x4.65mm
Color Yellow
Clarity VVS
Treatment No treatment at all
Origin Srilanka
Luster Shimmering

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