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

meaning excellent condition with vibrant green colouration

Macro photography and scientific illustration

and these examples demonstrate the accomplished craftsmanship of their makers

Quality Grade: A1 (Excellent condition with intact mandibles

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;