5.3 CTS AMETHYST GEMSTONE FACETED 11501

 NATURAL AMETHSYT  L GEMSTONES

CLARITY: TRANSLUCENT

AMETHYST SIZE-  11 x 10 x 8 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