QUARTZ

Minas Gerais, Brazil

QUARTZ, Minas Gerais, Brazil. An unusually developed quartz specimen. A choice, compound, undamaged, slightly-etched, colorless crystal that measures around 2 inches is entirely surrounded by a halo of small amethystine quartz crystals of another generation. One might expect to see a specimen like this from Rio Grande do Sul or from Artigas, Uraguay but its pegmatitic origin makes it most rare. 3-3/4x3-1/2x1-1/2. $1,000.