Rare Boulder Opal Silver Pendant from Australia - 0.6" - 1.74 Grams minerals This is a very nice

This is a very nice golden Apatite tumbled pendant from Mexico

The main Pyrrhotite is 3

5cm crystal below it

Location: Namibia

Rare Boulder Opal Silver Pendant from Australia - 0.6" - 1.74 Grams minerals This is a very niceThis is a fantastic and extremely rare Boulder Opal pendant from Australia in sterling silver. 2% of Australian opal is the second (after Black Opal) most prized form of opal, a unique form known as boulder opal. The opal usually forms as thin veins within these boulders, and most stones are cut to include some of the host ironstone matrix. Boulder opal is sometimes referred to as opal in matrix for this reason. Location: Western Queensland, Australia