Australian Boulder Opal // 81 Grams

Highly-coveted boulder opal is second in rarity among opals only to the elusive black opal, and this shimmering 81 gram specimen mined in Queensland, Australia is a AAA example. This concentrically banded ironstone boulder in rich brown hues is shot through with veins of opal in shades of electric purple, blue, and green. An overall mesmerizing specimen that will add dimension to any collection. Dimensions: 2-1/8"L x 9/16"W x 2"H, Weight: 81 g