52 Ct pink and grey boulder opal specimen Price_Mid-range 87 Ct wood replacement opal

87 Ct wood replacement opal in a classic oval shape

A lovely small green and purple boulder opal specimen shaped like a large tooth or tusk

This beautiful boulder opal features beautiful purple hues and caramel colours

but because the remaining internal structures create a mesmerizing inner world that is visible through the transparent and translucent opal

A fun free-form boulder opal with green

52 Ct pink and grey boulder opal specimen Price_Mid-range 87 Ct wood replacement opalA unusual pastel pink, blue and grey boulder opal specimen. 52 grams 48 x 45 mm 10 mm thick. Natural solid boulder opal specimen. Mined by Sue at her Mt. Margaret opal mine in Queensland, Australia. Sits on its side in one direction.