Smolensk State Unitary Company Production Corporation - Diamond polishing company providing "Russian cut" or the "Russian make" stones between 0.01 and 7.00 carats in weight and include various colours and purities. Waldman Diamond Company, - Diamond manufacturer, buyers and sellers. EightStar Diamond Company - Manufacturer of Eightstar diamonds featured high optical symmetry. Ernest Slotar, Inc. - Importing and contract manufacturing company, specializing in ideal cut and fancy shape diamonds. Sell to trade only Lazare Diamond - Manufacturer of Lazar brand name ideal cut diamonds. Provides jeweler locator. Penta Diamonds - Manufacturers and wholesalers of loose fancy shaped diamonds including marquise, oval, heart and pear shapes. Sarine Technologies - Manufactures tools for optimisation and grading of rough and polished diamonds.