What’s New Bench & Lab

The Diamond Proover II is a thermal probe and a reflectometer in a single instrument, enabling users to test moissanite as well as cubic zirconia, diamond, and other gemstones. The microprocessor-controlled device operates on battery or AC/DC currents and comes with a one-year warranty. BTR Inc., 52 Park Ave., Park Ridge, NJ 07656; (201) 391-5955, fax (201) 391-7247. Quick-Sil two-part 0% shrinkage RTV putty for production silicone jewelry molds is available in a 2-lb. kit: 1 lb. of part A and 1 lb. of part B. The two parts are mixed together by hand and then pressed around the jewelry model in a mold frame. No vulcanizer is needed; even C-clamps on a heavy book will do, according to the company. Quick-Sil is suitable for direct casting of low-temperature metals such as pewter or tin. CASTALDO, 120 Constitution Blvd., Franklin, MA 02038; (508) 520-1666, fax (508) 520-2402. The CMI 90

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