4.74ct Triangular Cabochon Opal 23x19mm Bocks Swiss Lapping Machine Some of the best features

Some of the best features of having a tungsten carbide draw plate is you will notice the wire coming out highly polished

gypsum board

silicons & manhattan wheels

Accurately form/shape with these marked lined triblets

please allow the color of packing box may be changed

4.74ct Triangular Cabochon Opal 23x19mm Bocks Swiss Lapping Machine Some of the best featuresOpal 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