Prehnite 10mm Round AAA Grade - 15-16 Inch R0911 The color of Smoky Quartz

The color of Smoky Quartz is due to natural irradiation and traces of aluminum within the cryst

It was first found in a deposit near Shunga village

Each charm will vary slightly in size and in color

This semi to translucent stone occurs in an array of hues

Common Opals such as White African Opal are believed to provide gentle

Prehnite 10mm Round AAA Grade - 15-16 Inch R0911 The color of Smoky QuartzPrehnite was the first mineral to be named after a person: its discoverer, Dutch Colonel Hendrik Von Prehn. Von Prehn discovered the stone in South Africa in 1774. Prehnite is translucent to transparent, in colors from light green to yellow green to olive, with occasional inclusions of Black Tourmaline that crisscross the stone in fibrous patterns. It is a phyllosilicate composed of silicon, calcium and aluminum with trace amounts of iron.