1.58ct Oval Faceted Sapphire Certified Unheated 7.7x5.3mm Desktop Jewellery & Watch Magnifier with LED Lights

1.58ct Oval Faceted Sapphire Certified Unheated 7.7x5.3mm Desktop Jewellery & Watch Magnifier with LED LightsSapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur. The variety in colours is due to trace amounts of elements such as iron, titanium, chromium, copper and magnesium. Mohs Scale of Hardness: 9 (out of 10). Sources: Mines that have yielded the finest sapphires in colour and clarity are located in Kashmir, Myanmar and Sri Lanka. Nowadays the main sources of sapphires are:

Anti-static Material: 10^(6)~10^(11) Ohm

Measuring the gate MOSFET threshold voltage and the gate capacitance

Wet and Dry Sanding: Waterproof and tensile resistant technology enables these sandpaper can be used for both wet and dry purpose

It is fitted by screwing five brackets with wood screws (not supplied) onto the base of the bench

300 x 220 x 35mm

Short-circuit/open-circuit detection and DC level testing function

P-3: Close in the Range: when the detecting current is between I1 and I2

Convex & Concave Stake

Socket: 4mm

Replacement Tension Spring

of Lens: 25mm/12mm/8mm

12 x 380 x 11 T-End