Obsidian gemstone is a natural glass formed from volcanic activity in the same way as Granite. Obsidian is 35-80% Silica and low in water content. It has been used in tool-making and jewelry-making for centuries . Its sources are the Caucasus Mountains, Georgia, Armenia and Russia.
Images below show rough snowflake Obsidian being cut and polished into a beautiful gemstone.
It is best to choose a piece of Obsidian rough with the least amount of cracks and visible lines where the piece may crack whilst cutting. We selected a large piece to start with and cut it in half.
Slicing Obsidian on a Diamond Saw
Obsidian is easy to saw and makes ideal to cut and polish
Always wear protective mask when working with obsidian rough as the silica can be harmful to your health
Always have plenty of water running over saw blade or polishing wheel as Obsidian is silica and can cause problem to your lungs
A 6 inch saw blade 0.18 grit is good for cutting and polish wheels are diamond impregnated from 180,240 to 400 grit than a final polish
It is also good to carve obsidian so dermal drill with diamond tip drills are best and than polish with drill and the stone has brilliant polish after polishing final laps or on pig skin or polish clothes.
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