Gemstone Tumbling By Lortone
by Lortone, inc.
22 Pages, Illustrated, Black & White Photos, Paperback, 5 1/2" x 8 1/2"
- This is a new " Professional Gemstone Tumbling By Lortone" book
- Shows how to set up tumbling machines
- The principles of tumbling
- Abrasives and polishes
- Tumbling preprocessed gemstones
- Tumbling sharp-edged rough materials
- Changing, Smoothing and shaping stones
- How to select gemstone materials
