12.68 ct. Oval Deep Vivid Purple Amethyst [AM-088] $130.00

Shape = Oval Color = Deep Vivid Purple Clarity = Eye Clean Size = 17x13.5 Weight = 12.68

Amethyst Gemstones

• Crystal system: Trigonal
• Chemical composition: SiO2
• Color: Violet, purple pink.
• Hardness: 7.0
• Specific gravity: 2,65
• Refractive index: 1.54
• Dispersion: 0.013
• Pleochroism: Purple, reddish purple
• Birthstone: February
• Enhancements: Amethysts may be heated to lighten very dark purple crystals prior to cutting. The treatment is permanent, although only occasionally used.