Toenail, 3.0 x 2.0 x 1.5 cm
Amelia Mine, Santa Rosalia, Baja California Sur, Mexico

This is a superb specimen of a highly sought-after species. The 7 mm cube, set aesthetically on matrix, is lustrous, well-formed, and the classic deep blue. You would be hard-pressed to find a Boleite this good these days. This is a superlative specimen for the species, for a matrix thumbnail in particular. Mined by Larson and Swoboda in the late 1970's.