The "Gentle Soak" Recipe: Dish soap + warm water + soft toothbrush (for diamonds/sapphires). 1 The "Never" List: No bleach, no gym lifting with gold rings, and no ultrasonic cleaners for opals/pearls. 2 The "Ettore’s" Loop: We suggest an every 6-month professional "Health Check" while you grab a coffee next door. 3 Emergency Contact: Call Stark Jewelers at (916) 646-4374, or visit our studio at 2373 Fair Oaks Blvd, Sacramento for "stone-loss" emergencies. 4