0.78ct Octagon Cut Sapphire 5.5x4.8mm Stanley 65cm Tool Box

0.78ct Octagon Cut Sapphire 5.5x4.8mm Stanley 65cm Tool BoxSapphire 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:

Longines calibre 280 has two versions of mainspring

Greiner LC Prime

temperature: 0~40℃ or 32~99℉

Broad Tips (2A)

1 * Pair of Test Probe

Package Weight: 820g / 28

Leather Watch Strap Hole Making Plier

DIY Supplies: Metalworking

This is a traditional economical watchmaker's sharpening stone on a wooden base

77in(D * H)

It can be used in computer desk office table etc

Battery needs: DC 4