5.87ct Cushion Cut Sapphire Certified Unheated 9.6x9.1mm Watch Case Opener

5.87ct Cushion Cut Sapphire Certified Unheated 9.6x9.1mm Watch Case OpenerThis unheated sapphire is accompanied by a certificate from GIA. Sapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur in orange, yellow, green, brown, purple, pink, black and colourless. Red and reddish pink coloured corundum is referred to as ruby. The variety in colours is due to trace amounts of elements such as iron, titanium, chromium, copper and magnesium. Mohs Scale of

Temperature Measurement Range: -15°C-60°C

Package size: 165 * 100 * 50mm / 6

Convenient to grind

Required Assembly Tools: Clamp Pliers

Model automatic support generation: support

Ergonomic delrin base with brass spike

Holder made of carefully polished beechwood

Cumulative Time: 0-999

2 * 1200 Grit Sandpaper

Note: when in alarm state

Specifically for Baume & Mercier watches

Handle Ø14mm