6.91ct Drop Shape Opal 20x12.3mm Clock Pendulum Electronic Sensor for Elma & Witschi Ultra-sensitive bulb and capillary thermostat

Ultra-sensitive bulb and capillary thermostat for precise temperature control

by rotating the knob to change the setting

5 feet vacuum hose assembly

A - Swiss Made

Module Size: 130 * 52 * 46mm / 5

6.91ct Drop Shape Opal 20x12.3mm Clock Pendulum Electronic Sensor for Elma & Witschi Ultra-sensitive bulb and capillary thermostatOpal 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