31 Carat Purple Amethyst 20.4x18mm Oval Cut Loose Gem Huge Gemstone Faceted Stone For Gold Jewelry February Birthstone Large

Tested on refractometer: Quartz (Amethyst)
Measurements: 20.4 x 18.3mm, 13.1 mm deep
Weight: 31.5 carats
Color: Medium Purple
Cut: Oval
Clarity: Eye Clean
Condition: Good condition. Has some light wear. Please see pictures 7, 8, & 9 to see the stone under magnification.