2.3ct Oval Cabochon Opal 12.1x7.3mm Witschi Analyser Q1 & Q Test 6000 Cable Set Temperature Control Range：-55℃～125℃ / -67℉～257℉

Temperature Control Range：-55℃～125℃ / -67℉～257℉

With maximum

providing nice adjustment of motor speed

Ø20mm WG Labels

2.3ct Oval Cabochon Opal 12.1x7.3mm Witschi Analyser Q1 & Q Test 6000 Cable Set Temperature Control Range：-55℃～125℃ / -67℉～257℉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