Inside the Polo Plaza shopping center at 3790 Via De La Valle, Suite 211, Del Mar, CA 92014, Alchemist Studio SD is a family-owned gold and estate jewelry buying service with three generations of industry experience. General manager Gabriel Band leads a team that purchases gold, silver, diamonds, coins, watches, and estate jewelry, and the Polo Plaza location puts the studio within easy reach of guests at the Hilton San Diego/Del Mar just east on Via De La Valle. Every evaluation is performed directly in front of the client, with staff explaining karat weight, purity, and current market pricing before making an offer. There is no obligation to sell, and accepted offers are paid in cash or check on the spot. The studio also repairs jewelry and buys and sells Goldbacks — spendable currency notes made from 24-karat gold. A perfect 5.0-star Google rating from 26 reviews reflects the shop's emphasis on transparency and fair pricing. Walk-ins are welcome Monday through Friday from 10 AM to 6 PM and Saturday from 10 AM to 1 PM, and consultations can also be scheduled online or by calling ahead. Free evaluations are available with no appointment required during business hours. Collectors looking to buy rather than sell fine jewelry will find complementary options at Loghman Jewelers inside Del Mar Plaza on Camino Del Mar. Free parking is available in the Polo Plaza lot.