How to clean gold and diamond jewelry at home

Solid gold and natural diamonds are made to last for generations, but they do not stay bright on their own. Skin oils, hand cream, soap residue and everyday dust settle on the metal and, even more, on the stones. The good news is that the best way to clean fine jewelry at home is also the gentlest: warm water, a drop of mild soap and a soft brush. Here is the method I recommend, and what to avoid.

Why diamonds lose their sparkle

This is where my background in physics and biology still shows up at the bench. Diamond is lipophilic, which means its surface attracts oil and holds on to it, while water simply runs off. A thin film of skin oil or lotion on the back of a diamond changes how light enters and leaves the stone. Instead of bouncing back up through the top of the diamond as brilliance, more of that light escapes or scatters, and the stone looks flat and cloudy.

So when a diamond looks dull, the stone has not changed. It is just wearing a coat of grease. Remove the film and the light behaves the way the cutter intended again.

The gentle home method, step by step

You need a small bowl, warm (not hot) water, a few drops of mild dish soap without moisturizers, a very soft toothbrush and a clean, lint free cloth.

1. Soak. Mix the soap into the warm water and let the piece rest in it for 15 to 20 minutes. This loosens the oil film so you do not have to scrub hard.
2. Brush. Gently brush the gold and the stones, paying attention to the back of each diamond and the spaces under the setting, where most of the buildup hides.
3. Rinse. Rinse under clean running water. Close the sink drain first, or rinse over a bowl. It sounds obvious until a stud slips.
4. Dry. Pat dry with the lint free cloth and let the piece air dry completely before you store it.

Once every week or two is plenty for pieces you wear daily, like studs or a ring you never take off.

Setting matters: bezel, pavé and prongs

How a diamond is held tells you how careful to be.

Bezel settings wrap a thin wall of gold around each stone. They are secure and protective, which is one reason a piece like the Bezel Set Diamond Tennis Bracelet, with 3 ct of natural diamonds each framed in its own 14K gold bezel, works so well for everyday stacking. The tradeoff is that dirt can collect where the gold meets the stone, so give the edge of each bezel a little extra attention with the brush.

Pavé settings hold many small diamonds close together with tiny beads of gold. Brush softly and always in the same direction, and never pick at the stones with anything sharp. The Pear Diamond Studs, pavé set with pear diamonds in 18K gold, are a good example of a piece that rewards a light touch.

Prong settings leave more of the diamond exposed, so they collect oil quickly but also clean up quickly. While you brush, look at each prong. If a stone moves when you touch it, stop wearing the piece and have it checked before you lose the diamond.

What to avoid

• Chlorine. Take jewelry off before a pool or hot tub. Chlorine can attack the other metals in a gold alloy and, over time, weaken it.
• Harsh household cleaners and bleach. They can discolor gold and leave residue around settings.
• Abrasives. Toothpaste, baking soda and rough cloths leave fine scratches on polished gold.
• Ultrasonic cleaners without advice. They work well on many solid pieces, but the vibration can loosen small pavé stones or stones that are already slightly loose. If you are unsure, ask your jeweler first.
• Boiling water and sudden temperature changes. Warm is enough.

Caring for the gold itself

Yellow and rose gold hold their color all the way through, because the color comes from the alloy itself, so cleaning restores them completely. White gold is often finished with a bright rhodium layer, which can soften with wear over the years. That is normal, and a jeweler can refresh the finish.

Textured and polished surfaces age differently. A high polish will show fine marks first, while a curved, flowing surface like the Wavy Diamond Bracelet, made in 18K recycled gold with ethically sourced natural diamonds, catches light along the curve and keeps its glow even as it softens with wear. Many people come to love that soft glow more than the first shine.

Storing your pieces

Store each piece separately in a soft pouch or a lined box compartment. Diamond is harder than gold, so two pieces tossed together in a drawer will scratch each other. Fasten necklace and bracelet clasps before storing them so the chains do not tangle. Put jewelry on after lotion, perfume and hairspray have dried, and take it off before the gym, gardening or cleaning.

A little care, every day

Fine jewelry is meant to be worn, not saved for special occasions. A few minutes in warm soapy water is all it takes to bring back the light. If you have a question about caring for a specific piece, write to me at office@margaretkrinetz.com, or explore the Wavy collection to see how gold and diamonds move with you every day.