7.55 CTS AMETHYST GEMSTONE FACETED 11496

Item Information

Dimensions (mm) not provided
Weight (carats) not provided
Colors
Certified Gemstone

 NATURAL AMETHSYT  L GEMSTONES

CLARITY: TRANSLUCENT

AMETHYST SIZE-  15 X 11 X 7 MM

SHAPE: OVAL

TREATMENT: NONE, 100% NATURAL, UNTREATED.

 

 

AMETHYST GEMOLOGY INFORMATION:

Amethyst gemology
Species: Quartz
Color: Purple, violet, pale red-violet
Chemical composition: SiO, silicon dioxide
Crystal system: (Trigonal), hexagonal prisms
Hardness: 7(Mohs scale)
Specific gravity: 2.65
Refractive index: 1.544 - 1.553
Birefringence: +0.009
Optical character:
Color of streak: White
Absorption spectrum: 550 - 520
Fluorescence: Weak, bluish

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Pricing & Details

Auction ID 308853
Watchers 3 watching
Viewed 1,339 times
Starts 4th Nov 2012 3:47pm PST

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