12.5" Dark Purple Amethyst Cluster - Minas Gerais, Brazil

This is a stunning cluster of amethyst crystals that was collected from Minas Gerais, Brazil. It consists of relatively large, lustrous, deep purple amethyst crystals that haven't undergone any polishing. Some of these crystals contain interesting white mineral formations that are peppered with black-brown goethite aggregations. It measures roughly 12.5" wide and weighs 15 lbs.

This specimen is accompanied by an acrylic/metal display stand to assist with presentation.

Amethyst is a purple variety of quartz (SiO2) and owes its violet color to natural irradiation, iron impurities, and the presence of trace elements, which result in complex crystal lattice substitutions. It’s considered a semi-precious gemstone, and just two centuries ago was considered to have a value on par with diamonds, sapphires and rubies.

Much of the world’s amethyst comes from extensive deposits in Southern Brazil that have been heavily mined for about a century. The amethyst occurs in large cavities or geodes within volcanic rocks and the coloration and crystal size can vary greatly.

Quartz var. Amethyst
Minas Gerais, Brazil
12.5 x 6.5", Weight: 15 lbs