This beryl crystal from Minas Gerais, Brazil. Minas Gerais is a large area containing hundreds of minerals and thousands of mines, claims and diggings. The exact provenance is often often kept secret for security reasons. Beryl is a silicate containing the elements Be, Al, Si and O. In pure form it is colorless, however, it can be found in a multitude of colors which are caused by trace impurities in the crystal lattice. Varying chemical compositions and temperatue of the hydro thermal solutions forming this crystal caused the different colors with multiple generations of growth as well as the light etching and re-crystallization on some surfaces. This piece measures 1 1/2 x 1 1/4 x 11/16 inches or 38 x 32 x 18 mm.