Jet 6mm Heishi - 15-16 Inch R1365 more commonly referred to as

more commonly referred to as simply Australian Opal

Specially designed for cutting hard wire

and inlay placement should be expected

It is a particularly unusual gem because it exhibits a special optical property known as "tenebrescence

blush color is deceptive

Jet 6mm Heishi - 15-16 Inch R1365 more commonly referred to asJet is a mineraloid gemstone, formed from wood that has decayed under extreme pressure, over the course of millions of years. Because it is relatively soft, it is easily carved and shaped. Jet is made from wood, and this can be confirmed under magnification, as it preserves the original cellular structure of the wood from which it formed.