Blue Sapphire - Tumble Quality:Staff Pick Drill bits are very different

Drill bits are very different than burrs

5cm x 6cm  Approximate Weight of 1 piece: 296g

Approximate Weight of 1 Pair: 42g

so not much of their skeletal structures have fossil records

The only other location this stone is mined is Russia

Blue Sapphire - Tumble Quality:Staff Pick Drill bits are very differentMined from: India Description: Sapphire is a precious gemstone belonging to the corundum family, which is a crystalline form of aluminum oxide. It is the second hardest natural mineral, ranking 9 on the Mohs scale, just below diamond. The color of blue sapphires is caused by the presence of trace amounts of titanium (Ti) and iron (Fe), which replace some of the aluminum atoms in the crystal lattice. These titanium and iron ions absorb certain