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Amethyst ( per carat)

$400.00 $300.00

Color: violet, purple-violet
Hardness: 7
Refractive index: 1.54 – 1.55
Density: 2.65 – 2.66
Chemical composition: SiO2
Crystal structure: hexagonal
Lustre: vitreous

Category:

Description

Amethyst is a transparent purple-violet variety of quartz. The best amethysts have a medium dark violet color and uniform coloring. They are rarely heated to lighten dark colors or to improve transparency. An amethyst will change color to yellow or greenish yellow after heat treatment. Long time exposure to direct sunlight may make the color fade.

Amethyst 39.00 cts

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