Free Form Green Opal – Polished Display Specimen Size:Medium 501g–750g Scientific name: Lonchura maja

Scientific name: Lonchura maja

Accompanied by a detailed educational card

this large 3kg specimen brings genuine geological drama to any space

These stunning metallic golden ground beetles are endemic to France

Free Form Green Opal – Polished Display Specimen Size:Medium 501g–750g Scientific name: Lonchura majaA 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;