As a service division of San Diego Jewelry Buyers, El Cajon Diamond Buyer operates from 907 Sixth Avenue in downtown San Diego's Gaslamp Quarter. The firm specializes in purchasing large-carat diamonds, estate diamond jewelry, and luxury timepieces, evaluating each stone across the 4C grading framework — a secondary-market expertise that complements the artisan gift inventory at love & aesthetics. Free market appraisals cover loose diamonds (certified and uncertified), diamond engagement rings, designer-signed pieces from brands like Cartier and Tiffany, and Swiss luxury watches. No-credit-check collateral cash loans offer an alternative to outright selling, a financial-services model distinct from the craft-cocktail hospitality at Kamon Craft Cocktail Bar but serving the same Sixth Avenue corridor. Highest-value transactions involve GIA-certified diamonds exceeding three carats and estate pieces from heritage luxury houses appraised against current wholesale and auction-market benchmarks.