Fluorite 3mm Table Cut Cube A Grade Bead - 15-16 Inch Natural Agate This variety of Amazonite is

This variety of Amazonite is actually a combination of Amazonite

Sardonyx has a Sard base

Argentinian Blue Onyx and Argentinian Aquamarine Onyx

also known as Turbo marmoratus

limestone and copper

Fluorite 3mm Table Cut Cube A Grade Bead - 15-16 Inch Natural Agate This variety of Amazonite isFluorite is a luminous, soft and glassy stone, sometimes referred to as the most colorful mineral in the world. It is one of the most sought to after minerals among gem and mineral collectors, second only to Quartz. The term fluorescent was inspired by Fluorite, one of the first fluorescent minerals ever studied. It is frequently fluorescent under ultraviolet light, and this phenomenon is thought to be due to impurities of yttrium or organic matter