Aluminum oxide powder. Mohs hardness=9, for polishing harder gemstones over 7.5 Mohs. Make your own slurry.
Aluminum Oxide Polish - The Rock Shed
Aluminum Oxide Polish/Great polish for stones of all hardness's High Quality Grit Tip sheet and instructions also included
Aluminum Oxide Polish: 5lbs
Fundamental Rockhound Products: 1 oz .3 Micron Aluminum Oxide
, The Linde-A coated polishing lap contains the finest grade of Alumina polish available. With a 0.3 micron size, Linde-A polish produces a polish
Lightning Lap A1 (Linde A) Alumina Lap
Lightning Lap D'Lite Diamond Laps – LightningLap
Aluminum Oxide Dressing Bar, This 220 grit Aluminum Oxide Dressing bar is 4 long x 3/4 square. It's used for dressing Sintered diamond laps and
Lightning Lap Aluminum Oxide Dressing Bar
20lbs Aluminum Oxide 600 Pre-Polish Rock Grit Stage 3
Lightning Lap Concave Faceting Mandrels – LightningLap
IMPROVE YOUR ROCK TUMBLING RESULTS: Achieve the finest finish and highest refinement on your workpiece with this 20 lbs. of 1200 Aluminum Oxide grit
MJR Tumblers 20 LB Polish 1200 Aluminum Oxide Rock Refill Grit Abrasive Media Final Step USA
Ceramics Al2O3 Powder Aluminum Oxide Polishing Powder Alumina
IMPROVE YOUR ROCK TUMBLING RESULTS: Achieve the finest finish and highest refinement on your workpiece with this 20 lbs. of 1200 Aluminum Oxide grit
MJR Tumblers 20 LB Polish 1200 Aluminum Oxide Rock Refill Grit Abrasive Media Final Step USA
White Lightning Abrasive Shop Abrasive Blasting Media