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Natural Andradite

Andradite is a species of garnet which was named after M d’Andrada, a famous Portuguese mineralogist. Several varieties of andradite are found in nature and demantoid, the striking green variety is the most well known. Other varieties may be brown or greenish brown or yellowish green but clean large clean stones are always a rarity. The most famous deposit of andradite is of course the one in the Urals but this source seems to be nearly depleted. More recent deposits in Mexico, Korea, Namibia, and Iran have also been reported.


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Andradite Profile

Color information: brown, greenish brown, yellowish green, green
Refractive Index: 3.82 – 3.85
Chemical Composition: Ca3Fe2(SiO
Hardness: 6.5
Density: 1.888 – 1.889
Crystal Group: Cubic
Ocurrence: Mexico, Korea, Namibia, Russia, Iran, South Africa
Sign of the Zodiac: N/A
Month of the year: N/A
Andradite

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Sapphire Single
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Sapphire Single Oval Eye clean to Slightly included
Size: 11.10 X 9.00 MM
Weight: 6.660 CTS
Shape: Oval
Clarity: Eye clean to Slightly included
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Size: 30.90 X 24.00 MM
Weight: 30.130 CTS
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Clarity: Opaque
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Gemstone Variety: Hits Index
Going Up Amber +130903 +2.9%
average price USD 183.13 per item
Going Up Sapphire +867 +0.0%
average price USD 391.37 per item
Going Up Alexandrite +627 +0.1%
average price USD 2078.04 per item
Going Up Turquoise +515 +0.1%
average price USD 57.70 per item
Going Down Anatase -23452 -4.3%
average price USD 221.50 per item
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Gems Legend and  Lore This month birthstone: Citrine, Topaz
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October 23 – November 21
Fixed Sign. Scorpio is imaginative and emotional. Your zodiac stone...more

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