Spotted at the Oct. 4–7 Jewelers International Showcase show in Miami Beach:(Left)1. Rhomance collection bracelet in rhodium-finished brass with peridot and yellow and blue topaz; $89; Sterling Reputation, Sunrise, Fla.; 954-578-1880; sterlingreputation.com2. Ring in sterling with 18k gold accents and carved amethyst; $651; Cydonia & Co., NYC; 866-347-9032; cydoniajewelry.com 3. Stargazer necklace with sapphires and detachable enhancer in sterling silver with Swarovski-cut sapphires and diamonds; $3,850; What’s Your Sign? Jewelry–Designs by Glenn Bradford, Bayside, N.Y.; 646-421-3049; whatsyoursignjewelry.com 4. Earrings in 18k gold with fancy-colored diamonds and colorless melee; $24,935; Sophia by Design for S & I Creations; Philadelphia; 215-629-0260; snicreations.com 5. Bangle in rhodium-plated sterling with colorless CZ; $520; Core Jewelry, NYC; 212-944-