Prehnite 13mm Faceted Clover - 15-16 InchPrehnite 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.

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

reddish to browns

It is a variety of the mineral corundum

Coral has been used in personal adornment since antiquity

When this combination crystallized

Fancy Jasper

Rose Quartz is said to be the Stone of Unconditional Love

It can even exhibit various colors within the same specimen

milky whites

[Use Fire Opal description

as it is softer than both Jasper and Rhyolite

it's technically a type of quartzite