- Thumbnail, 1.5 x 0.9 x 0.5 cm
- Gachala, Guavio-Guateque Mining District, Boyaca Department, Colombia
A superb 2-piece set of two, light grass-green with hints of blue, gem euclase crystals from Gachala, Colombia and the Irv Brown Collection. The crystals have glassy luster, sharp terminations and are more intensely transparent and bright, in person. 5.75 carats.