Glass / Lapidary Saws

A lapidary trim saw uses a thin diamond blade and water or oil cooling to cut rocks, gemstones, and glass into slabs or workable pieces. Trim saws handle smaller, precise cuts, while slab saws tackle larger rough. Blade size determines the maximum cut depth.

Saw size refers to blade diameter, which sets how thick a stone you can cut. A 4 to 6 inch trim saw suits small gems and cabbing prep, while 10 inch and larger saws cut bigger slabs. Pick a size based on your typical rough.

A compact trim saw in the 6 to 8 inch range is the usual starting point: it cuts most hobby rough, uses less coolant, and costs less than a slab saw. Trusted lapidary brands hold value well, so buy quality over the cheapest option.

Yes. Diamond-blade lapidary and glass saws cut both stone and glass, since the blade abrades rather than tooth-cuts. Use the correct blade and steady water cooling to avoid chipping. For art glass, a dedicated glass saw or ring saw gives cleaner curved cuts.

Both are used. Water cooling is cleaner and common for trim saws, while oil reduces heat and rust on larger slab saws and extends blade life. Always cut with the recommended coolant, since dry cutting ruins diamond blades and overheats the stone.