Dioptase from Namibia (larger specimen) tourmaline tower Aventurine is a variety of

Aventurine is a variety of quartz

Rainbow Aura Quartz is a variety of natural quartz that has been altered by metal vapors bonding to it

These metals include gold

This Indonesian Stone Canyon Jasper is a brecciated stone

The dark red color is created from inclusions of minerals such as iron oxide or manganese oxide

Dioptase from Namibia (larger specimen) tourmaline tower Aventurine is a variety ofDioptase is considered a very rare, and highly prized mineral due to its complex mineral structure. Namibia is globally renowned for producing some of the world's most pristine, vibrant green crystals. The green is actually caused by the presence of copper within its chemical structure. Measuring 1. 5 inches in height, 1. 3 inches in length, and . 5 inches in width. Weighing . 8 ounces. Customer will receive the exact item pictured.