Toll-Free 888-331-7625 or 307-754-4681 | Shopping Cart | About Us - Company Info | Contact Us Page | Home Page Polish, Tin oxide $23.60 One pound of pure tin oxide, 99.6% pure. Tin oxide is an excellent polish for cabochons, faceting, flat lapping, or tumbling many gemstones. We never used anything other than tin oxide, for flat lapping and got great results. (One exception was rhodonite that tends to undercut when flat lap polishing, although tumble polishing rhodonite with tin oxide gave very good results.) There are many types of tin oxide sold. Make sure the tin oxide is at least 99% pure. An order of one is for a one pound package. Related Items Here are some products that may also be of interest to you: • Polish,Tin oxide, 1/2 lb.