Caring for 14K and 18K gold and lab-grown diamond jewelry is straightforward: clean with mild soap and warm water every 1–2 weeks, store pieces separately, and avoid chlorine, harsh chemicals, and abrasives. With these habits and a professional inspection every 6–12 months, your fine jewelry will stay beautiful for generations.
Quick Answer
- Clean with mild dish soap + warm water every 1–2 weeks; use a soft toothbrush for crevices
- Never use toothpaste, baking soda, bleach, or acetone — all will damage gold or diamonds
- Remove jewelry before swimming, exercising, applying cosmetics, or using cleaning products
- Store each piece separately in a soft pouch or compartment to prevent scratching
- Get a professional inspection every 6–12 months to check prongs, clasps, and settings
How to Clean Gold & Diamond Jewelry at Home
This method works for solid 14K and 18K gold with diamonds, sapphires, rubies, and most hard gemstones. Do not use this method for pearls, emeralds, opals, or turquoise.
- Mix the solution: A few drops of mild dish soap in a bowl of warm (not hot) water.
- Soak: Place jewelry in the solution for 20–30 minutes to loosen oils and buildup.
- Brush gently: Use a soft-bristled toothbrush on crevices, prong settings, and the back of stones.
- Rinse: Under warm running water — always close the drain first.
- Dry: Pat with a lint-free cloth. Air dry completely before storing.
What to Avoid
Toothpaste, baking soda, bleach, acetone, or home ultrasonic cleaners without professional guidance
Swimming, exercising, applying lotions or perfume, cleaning with chemicals, sleeping, gardening
Hand sanitizer, saltwater, cosmetics with abrasive particles, hairspray — apply before putting jewelry on
Mild dish soap, warm water, soft toothbrush, lint-free cloth, individual storage pouches
Storage Best Practices
Separate storage: Store each piece in its own soft pouch or compartment. Diamonds can scratch gold; gold can scratch softer stones.
Cool and dry: Humidity accelerates tarnishing of gold alloys. Avoid bathrooms and windowsills.
Necklaces: Keep clasped and laid flat to prevent tangling and kinking.
Long-term storage: Use airtight containers or anti-tarnish strips. For a full heirloom preservation guide, see How to Store Fine Jewelry Long Term →
Gold Color Care at a Glance
Most traditional; minimal special care. Regular cleaning maintains warm luster.
Rhodium-plated for bright white finish. May need re-plating every 1–3 years with regular wear.
Copper content adds durability. May develop a deeper patina over time — many find this desirable.
Mohs 10 hardness — identical care to natural diamonds. No special treatment required.
When to See a Professional
Schedule professional cleaning and inspection if you notice:
- Loose or missing stones
- Bent or damaged prongs
- Clasps that don’t close securely
- Persistent dullness despite home cleaning
- Unusual sounds when shaking (may indicate a loose stone)
DEEVE offers complimentary cleaning and inspection for all customers. Learn more at Fine Jewelry Repair Services.
Explore related expert resources from Ara Talachian:
Jewelry Care Hub → Storage Guide → Warranty & Services → About the Author →Want the full technical breakdown? Continue below for a detailed expert analysis covering materials science, GIA-backed cleaning protocols, storage chemistry, and long-term preservation — authored by Ara Talachian, Master Goldsmith & Certified Gemologist.
Expert Breakdown: Fine Jewelry Care for 14K & 18K Gold and Lab-Grown Diamonds
Why Regular Cleaning Matters
Skin oils, cosmetics, lotions, and environmental particles accumulate on jewelry surfaces, dulling brilliance and creating conditions for accelerated tarnish. For diamond jewelry, buildup on the pavilion (underside) dramatically reduces light return and brilliance. Regular cleaning removes these deposits before they bond to metal surfaces or become difficult to remove.
Cleaning Chemistry: Why Dish Soap Works
Mild dish soap contains surfactants — molecules with hydrophilic (water-attracting) and hydrophobic (oil-attracting) ends. Surfactants surround oil and grease molecules, allowing them to be rinsed away with water. This mechanism effectively removes skin oils, cosmetic residue, and environmental deposits without damaging gold alloys or diamond surfaces.
Warm water (not hot) improves surfactant effectiveness and helps loosen deposits without thermal shock to settings or stones. Hot water can cause thermal expansion that loosens prong settings over time.
What Damages Gold and Diamonds
Toothpaste and baking soda: Both are abrasive compounds that scratch gold surfaces and can damage softer gemstones. Despite common advice, neither is appropriate for fine jewelry cleaning.
Bleach and chlorine: Chlorine attacks copper and silver in gold alloys, causing pitting, discoloration, and stress corrosion cracking. Even brief exposure to pool water can cause visible damage to 14K and 18K gold.
Acetone and alcohol: Can dissolve adhesives used in some settings and damage certain gemstone treatments or coatings.
Ultrasonic cleaners: Can loosen stones in prong settings, damage fracture-filled diamonds, and harm porous gemstones. Professional use only.
Storage Science: Preventing Tarnish and Damage
Tarnish in gold alloys results from oxidation of copper and silver components. Humidity accelerates this process by providing the electrolyte needed for electrochemical oxidation. Storing jewelry in cool, dry conditions — ideally below 50% relative humidity — significantly slows tarnish formation.
Anti-tarnish strips contain activated charcoal or other compounds that absorb sulfur compounds and moisture from the air, creating a protective microenvironment. They are particularly effective for silver-containing alloys (white gold, rose gold) stored long-term. For a complete heirloom preservation guide, see How to Store Fine Jewelry Long Term.
Professional Maintenance Schedule
Professional inspection every 6–12 months allows jewelers to identify and address issues before they cause stone loss or structural damage. Inspections typically include prong integrity check (bent, worn, or missing prongs), clasp and jump ring security, surface condition assessment, and professional ultrasonic or steam cleaning.
DEEVE provides complimentary cleaning and inspection under our lifetime warranty.
Related Resources
- How to Store Fine Jewelry Long Term: The Complete Heirloom Preservation Guide
- The Complete Jewelry Care Guide Hub
- White Gold vs Yellow Gold vs Rose Gold: Which Is Easiest to Care For?
- When Should You Take Jewelry to a Jeweler?
- DEEVE Lifetime Warranty
This guide was authored by Ara Talachian, Master Goldsmith & Certified Gemologist. For more expert resources, visit the Jewelry Care Hub.