Harold Stevens Jewelers has stocked GIA-certified loose diamonds from its 15th-floor Broadway showroom in downtown San Diego's Columbia district since 1979. The studio holds exclusive San Diego retail partnerships with Single Stone vintage-cut engagement rings and Todd Reed raw-diamond collections, a curated designer roster that complements the heirloom restoration and estate resizing work at David Levi & Sons Jewelers in the Jewelers Exchange. A Jewelers of America member with a Graduate Gemologist on staff, the showroom grades every loose stone in-house and issues photographic appraisal documents accepted by major insurance carriers for scheduled personal articles coverage. Both natural and lab-grown diamonds are available across old mine, old European, and modern brilliant cuts sourced from cutting centers in Antwerp and Tel Aviv. Engagement ring commissions extend into Per Amore fusion-forged platinum-and-gold bands and Lika Behar 24-karat-over-blackened-silver pieces, a bridal jewelry scope that runs on the same planning calendar couples follow at The White Flower Bridal Boutique on Fourth Avenue in Bankers Hill. Highest-value commissions involve multi-stone halo settings with center diamonds exceeding three carats, channel-set into hand-forged platinum mountings with micro-pavé accent bands.