7.7ct Pair of Pear Shape Cabochon Black Opals 14.2x10mm Vallorbe Swiss Classic Set of 5 Diamond Needle Files Gunsmiths and Woodworkers

Gunsmiths and Woodworkers

Color: Red + Orange

With software and user manual in the attached CD

Min: 10 x 13mm

Main color: blue

7.7ct Pair of Pear Shape Cabochon Black Opals 14.2x10mm Vallorbe Swiss Classic Set of 5 Diamond Needle Files Gunsmiths and WoodworkersOpal 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