What people are saying - Write a review
We haven't found any reviews in the usual places.
Preparing the Preform
Turning the Gem
Cutting the Crown Facets
8 other sections not shown
Other editions - View all
agate amateur applied azurite beautiful blank blue bottom buff cabochon carving cement cerium oxide chalcedony chuck color corundum crown mains crystal cutter cutting and polishing cutting lap diamond lap disk Donal Hord dop stick face facet head faceting unit fingers finished fire agate gem materials gemcutter gemstone girdle edge girdle facets green grinding wheel grit ground hard heat hole intarsia jade lapidary Lapidary Journal layer Linde machine mast height master lap metal method mineral mond mosaics motor mounted opal operation pavilion petrified wood piece polishing polishing agent polishing lap powder preform quartz refractive refractive index remove rhodonite rock rockhounds rotated rough ruby sanding cloth sapphire saw blade scratches shape shell side silicon carbide slabbing saw soft spindle star steel step-cut stone surface terial thick tin oxide ting tool trim saw vertical wet sanding wire wood