Blue Sapphire - Tumble childbirth Geological Age: 465mya

Geological Age: 465mya

Simple Fossil Cards that show 8 fossil pieces affixed to them

Approximate Weight of Each Piece: 25g

Many of the higher grade fire opals in this lot are contraluz specimens

the first ring of this design I carved weighed about 2 ounces

Blue Sapphire - Tumble childbirth Geological Age: 465myaMined 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