Lapis 9x13-12x16mm Top Drill Irregular Flat Drop - 15-16 Inch Round Pink This variety of opal is

This variety of opal is named "dendritic" for the small inclusions within it that resemble moss or ferns

It is found only in a four square mile area in a remote mountain range of Chihuahua

Some specimens of Fire Opal produce iridescent flashes and are referred to as Precious Fire Opal or “Firmament Stone

It often also occurs with colors of rust

it lightens because of further weathering and becomes Malachite

Lapis 9x13-12x16mm Top Drill Irregular Flat Drop - 15-16 Inch Round Pink This variety of opal isLapis is a semi to precious stone and one of the most sought after throughout history. It is highly regarded for its beautiful blue color flecked with gold inclusions of pyrite, and was prized in ancient times for the ultramarine dye derived from it. This dye was said to create Michelangelos favorite shade of blue. It is one of the worlds oldest known stones, mined since 4000 BCE, originally from the Lapis to Lazuli mine in Afghanistan.