18.56 ct Sky Blue Topaz 16x14.5 Cushion Cut Loose Gemstone Blue Topaz, Recycled Faceted Blue Topaz, December Birthstone

Tested on Refractometer: Topaz
Measurements: 16.1 x 14.4 mm, 9.7 mm deep
Weight: 18.56 carats
Cut: Rectangle Cushion
Color: Light Blue
Clarity: Eye clean
Condition: It has some wear. Please see pictures pictures 5-6