Precious metals and alloys thereof, namely, gold, silver, and platinum; objects made of precious metals and alloys thereof, namely, rings, bracelets, necklaces, ornamental neck chains, brooches, earrings, medals, and pendants; diamonds, namely brilliants; precious stones; jewelry; cuff-links, tie-pins; wristwatches; clocks; watchbands; chronometric instruments; jewelry plated with precious metal; clock and jewelry cases and caskets of precious metals