20x15mm Large Blue Topaz Loose Gemstone, Over 20 Carats, Oval cut

Blue Topaz
Measurements: 19.9x15.15mm, 10.05mm deep
Weight: 21.91 carats
Color: Sky Blue
Clarity: Eye clean
Cut: Oval
Condition: Faces up good, but has a small nick on bottom side of the girdle. See photo 2.  This stone is from recycled gold.