Nearly all commercial blue topaz is heated, irradiated, or both to create the "London Blue" color commonly seen. But this gem has neither been heated nor irradiated. If this were a small stone it would most likely appear nearly colorless, but in large sizes such as this the color is retained. Cut in a Portuguese oval design with fine clarity this is a must for any collector!
- Weight: 46.11 carats
- Dimensions (mm): 22.8 x 18.8 x 14.4
- Origin: Nigeria
- Color: 5B 8/6 (light blue)
- Clarity:VVS (eye clean)
- Cut: portuguese oval
- Treatments: None
- Overall Quality Grade: 8
Color determines the base value of a gemstone. We report either GIA color codes or Gemworld International color codes or both.
Grading is done per Gemworld International's grading system. The overall quality grade determines the wholesale value of the stone.