Free Form Green Opal – Polished Display Specimen Size:Medium 501g–750g meaning excellent condition with vibrant

meaning excellent condition with vibrant green colouration

This museum-quality specimen is professionally mounted under glass in an elegant wall-hanging frame

each half of this pair exposes the intricate septa and suture lines that divided the shell into a series of gas-filled chambers — the buoyancy system that allowed the animal to control its depth in the water column

All our Common Rose specimens are ethically sourced from sustainable collecting programmes

Free Form Green Opal – Polished Display Specimen Size:Medium 501g–750g meaning excellent condition with vibrantA beautifully polished free form specimen of Green Opal, hand cut with a flat base for effortless display. Each piece is graded by weight, so dimensions will vary naturally, and the unique character of each stone in colour, pattern, shape, and finish means no two specimens are alike. Green Opal is a common Opal formed from a silica rich solution of silicon dioxide and water. As water percolates through the earth, it picks up silica from sandstone;