#jewelleryfacts365 188/365 Gem fact

Naturally occurring blue topaz is quite rare. Typically, colorless, gray or pale yellow and blue material is heat treated and irradiated to produce a more desired darker blue.

Classic Imperial Topaz. Size: 5 by 2.5 cm. Locality: Saramenha, Brazil.
Collection: William Larson.
Photo: Harold & Erica Van Pelt