Natural Swiss Blue Topaz — 19.96 ct, Brazil, Oval Cut (GL) Citrine Facet Rough 70 carat Imperial Topaz from

70 carat Imperial Topaz from the Ural Mountains displays a bright golden body color with visible orange dichroism in an emerald cut

Cut: USA cut oval brilliant

There has been little to no new production in the last 4 years

Only traditional heat treatment has been applied

Natural Swiss Blue Topaz — 19.96 ct, Brazil, Oval Cut (GL) Citrine Facet Rough 70 carat Imperial Topaz fromSwiss blue topaz from Brazil weighing 19. 96 carats. This oval cut example displays IF clarity and strong, saturated blue color. Irradiated and heat treated in accordance with standard industry practice. Origin: Brazil Weight: 19. 96 carats! Size: 22 x 12 x 9. 2 mm deep Clarity: Internally Flawless. A top eye clean gemstone! Cut: Well cut oval facet Color: Swiss Blue Treatment: Heat and or irradiation