0.54ct Oval Faceted Sapphire 5.2x4.5mm dust cover

0.54ct Oval Faceted Sapphire 5.2x4.5mm dust coverSapphire 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:

Contact Material: Phosphor Bronze

This 8pcs folding screwdriver tool set is lightweight and compact

100mm G Clamp

* Star Key: T10

the final and most important operation in a 400-day clock repairis putting the pendulum in beat

36 x 815 x 30mm 400 Day

Bergeon 7499

Excellent heat insulation performance enables you to use the the soldering iron to directly solder in the mat

End Locking Clamp with Leather Jaws

each size comes with one piece

Head Length 80mm

- Magnification ratio: 50X-500X