5.51ct Oval Cabochon Opal 16.5x12.7mm Bergeon Watch Winders Calibre ETA 7001 1mm) (Maillefer Z(r))

1mm) (Maillefer Z(r))

32℉~200℉

In "soft" synthetic material

3M and the still image capture resolution is 640*480

Wipe washable with soapy water

5.51ct Oval Cabochon Opal 16.5x12.7mm Bergeon Watch Winders Calibre ETA 7001 1mm) (Maillefer Z(r))Opal 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