3.15ct Colour Change Cushion Cut Sapphire Certified Natural Unheated 7.7x7.1mm Diamond Grading Case

3.15ct Colour Change Cushion Cut Sapphire Certified Natural Unheated 7.7x7.1mm Diamond Grading CaseSapphire 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 Hardness: 9 (out of 10). Sources: Mines that have yielded the

Temperature: 0℃ ～ 50℃ (32℉ ～ 122℉)

41 x 720 x 28mm 400 Day

Set Includes (right and left hand):

Can be widely used in oil and chemical industry

2 Tempered Steel Collets

S9015(PNP Type): 40pcs

Will easily bend wire and sheet up to 5mm (6 gauge) thick

50mm & Ø2

Sprue Base = F45726

Green (Fluorescent) Enamel Resin

for black locking nut which fixes the blade

1 * Nylon Brush