5.13ct Oval Cabochon Black Opal 15.7x77.7mm Richard Mille Case & Movement Screwdriver; dynagem Swiss Style Black armrests

Black armrests

Tool Organiser

80mm (9cm)

Large Flat

Swiss-made lapping machine available

5.13ct Oval Cabochon Black Opal 15.7x77.7mm Richard Mille Case & Movement Screwdriver; dynagem Swiss Style Black armrestsOpal 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