Kenstan Lock Co. has published three booklets highlighting its newest locks. The booklets offer detailed descriptions and illustrations of the Interchangeable Core Thru-Glass Plunger Lock, the Pinline Sliding Thru-Glass Plunger Lock, and the Keymatic Sliding Door Ratchet Lock. Kenstan Lock Co., 101 Commerical St., Plainview, NY 11803; (516) 576-9090, fax (516) 576-0100; e-mail: kenstan@aol.com.

J.I.B. Diamond offers a brochure illustrating its collection of 14k, 18k, and platinum bracelets and necklaces enhanced with diamonds from 2 cts. to 20 cts. Suggested keystone prices range from $1,000 to $40,000. J.I.B. Diamond, 62 W. 47th St., Suite 411, New York, NY 10036; (212) 921-2833, fax (212) 719-9074.

The Gemological Institute of America has published its GEM Instruments 1998-99 catalog of gemological equipment and reference books. Among the new products listed in the catalog is the GIA GEM Colorimeter for color grading loose and mounted diamonds. Also featured are the GemoLite Super 60 Zoom Mark X Mobile Lab, the portable Mini Diamond Identification Kit, and the InfoView Imaging System. The catalog also includes a selection of lighting for the salesroom or workplace. GIA, Robert Mouawad Campus, 5345 Armada Dr., Carlsbad, CA 92008; (800) 411-8161 or (760) 603-4112, fax (760) 603-4080.

Art Imports has introduced an online wholesale jewelry catalog for retailers. The catalog includes 1,500 different styles of gold and diamond pendants, rings, bracelets, earrings, watches, and men’s jewelry and accessories. The electronic catalog displays the designs in three-dimensional images. Art Imports, 21 W. 47th St., #5-9, New York, NY 10036; (800) 246-3746 or (212) 840-3995, fax (212) 768-7395, www.artimport.com.

Mercury Ring Corp. has produced a four-page color supplement to its Bridal Classics catalog. To receive the supplement or the company’s 28-page color catalog, contact Mercury Ring Corp., 280 Grand Ave., Englewood, NJ 07631; (800) 223-0930 or (201) 569-1070, fax (201) 569-1538.

Contact East Inc.’s fall 1998 catalog features a broad range of precision hand tools, inspection equipment, cleaning equipment, adhesives, multipurpose tools, test equipment, and soldering irons. Among the new products listed are the Soft Tip Dissipative Tweezers and the Erem 2200 Series Ergonomic Cutters and Pliers. Contact East Inc., 335 Willow St., North Andover, MA 01845; (978) 682-2000, fax (978) 688-7829; www.contacteast.com.

Silmar has published a catalog presenting its platinum chains in a range of styles, including omega, Singapore, bead and curb chains, serpentine, and snake. The catalog also includes a series of semi-finished components and findings in platinum. Silmar S.P.A., Via Torino, 14, 36060 Romano D’Ezzelino, Vicenza, Italy; (39-0424) 832111, fax (39-0424) 832199, e-mail: info@silmar.it.

Fraiman Associates Inc. offers a free brochure featuring its matched pairs and fancy colored diamonds. Fraiman Associates Inc., 589 Fifth Ave., New York, NY 10017; (212) 751-0044, fax (212) 751-1996.

Kaleidoscope USA Inc. has released its 1998 catalog of diamond jewelry for an upscale market. Kaleidoscope USA Inc., 1180 Avenue of the Americas, Suite 1950, New York, NY 10036; (800) 888-5701 or (212) 575-1736, fax (212) 944-2426.