Prehnite with Rutilate 10mm Round - 15-16 Inch rqtz-spe-str Silica-rich waters create hardened deposits

Silica-rich waters create hardened deposits that preserve coral skeletons

Sweet and soft pink

the Sun Stone

This makes sapphires very durable and scratch-resistant

However in some regions

Prehnite with Rutilate 10mm Round - 15-16 Inch rqtz-spe-str Silica-rich waters create hardened depositsPrehnite 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.