16.6mm Round Cut Purple Amethyst 18.5 carat Loose Gem Faceted Gemstone Unmounted Stone February Birthstone, 16.5mm

Details-
Gem Species: Quartz
Gem Variety: Amethyst
Measurements: 16.6 mm round, 13.2 mm deep
Weight: 18.47 carats
Color: Medium Dark Purple
Cut: Round, Precision Cut
Condition: Great! Has a few small scratches that are hard to see without magnification