Prehnite 13mm Faceted Clover - 15-16 Inch tool set igneous rock with high silica

igneous rock with high silica content

earrings or in smaller groups within a design

a cryptocrystalline Quartz

This Lapis has been treated to enhance the blue color

Tranquilty

Prehnite 13mm Faceted Clover - 15-16 Inch tool set igneous rock with high silicaPrehnite 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.