9.76ct Trillion Cabochon Opal 17x16mm Seiko Beep Alarm 6.2mm (NEF) Shaft Movement 14ct Yellow Hard - 750-786°C

14ct Yellow Hard - 750-786°C

Size: full opened 90mm x 25mm x 25mm

Bracelet holding height 10mm

Osiris (19 x 18mm) ISO Swiss

1 * 78x57mm Horseshoe Hook Emery Grinding Sheet

9.76ct Trillion Cabochon Opal 17x16mm Seiko Beep Alarm 6.2mm (NEF) Shaft Movement 14ct Yellow Hard - 750-786°COpal 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