Australian Opal Pieces

Opals are comprised of hydrated silica and typically contain 6-10% water. They form during the acidic weathering of rocks, or precipitate from water-rich fluids containing silica which fill cracks in rocks.

£8.40/g
1. 2.01g £16.89
2. 1.52g £12.77
3. 1g £8.40
4. 1.27g £10.67
5. 1.25g £10.50
6. 1.15g £9.66
7. 0.6g £5.04
8. 1.05g £8.82
9. 0.56g £4.70