1.62ct Round Cabochon Black Opal 7.8mm gemstones

1.62ct Round Cabochon Black Opal 7.8mm gemstonesOpal is probably the most famous phenomenal stone displaying the unparalleled play of colour, a rainbow coloured kaleidoscopic effect. The name opal derives from the word 'opalus' given by the Romans, which is Latin for 'precious stone'. They can be fragile which makes it more suitable for jewellery such as necklaces, brooches and earrings that are less likely to be knocked. Opal is the birthstone for October. Mohs Scale of Hardness: 5. 5 6. 5

1 * Iron Stand with Sponge

High-quality

Hex Size: 0

Cut 2 (Length 160mm)

Horotec "All Purpose" Tool - Complete

For ES3000

9¾ Ligne Movement Holder

Item size: 85 * 85 * 20mm / 3

totally 12 laser lines (4 laser lines combine to a plane)

Heating Temperature: 0-450℃ （32-842℉)

160mm (6¼") Length

Capacity Test Error: 0