How to Clean a Diamond Ring

Diamond's crystal structure has a strong affinity for grease — it is literally a grease magnet. This is why diamonds used in industrial applications are sometimes recovered from ore using grease tables. In jewellery, this means your diamond attracts and holds onto body oils, hand cream, cooking residue, and soap film more readily than most gemstones. This coating blocks light, reducing brilliance and fire dramatically. The good news is that diamond's extreme hardness (10 Mohs) means cleaning it is very safe — you virtually cannot damage a diamond through normal cleaning.

The warm soapy water method works perfectly for diamonds: fill a small bowl with warm water and a few drops of dish soap (Dawn or similar). Soak the ring for 20-40 minutes to dissolve oils. Gently scrub with a very soft toothbrush, working around and under the stone. Rinse under warm running water. Pat dry or let air dry. For a deeper clean, you can use an ammonia-based glass cleaner (like Windex) — spray onto the diamond and brush gently, then rinse. This is safe for diamonds but should NOT be used on softer gemstones, pearls, or treated stones. Ultrasonic cleaners are safe for most diamond rings and provide the deepest clean.

Do not use bleach or chlorine solutions. Do not clean over an open drain. Avoid ultrasonic cleaners if your diamond has significant inclusions that reach the surface, as vibration can worsen existing fractures. Do not use ultrasonic cleaners on diamond rings that also contain softer gemstones (emeralds, opals) — the softer stone dictates the cleaning method. Do not use abrasive powders. If your diamond ring is set in a plated metal (rhodium-plated white gold), be gentle to preserve the plating.

Diamond engagement rings benefit from cleaning every 1-2 weeks for optimal sparkle. A quick soapy soak takes minimal effort and makes a dramatic difference. Deep cleaning with an ultrasonic or ammonia solution can be done monthly. Wiping your diamond with a soft cloth each evening after removal prevents oil buildup.

Professional cleaning every 6-12 months provides the deepest possible clean and an important setting inspection. Jewellers use commercial-grade ultrasonic cleaners and steam cleaners that achieve results difficult to replicate at home. They will also check prong integrity, metal wear, and overall ring condition. This regular service is particularly important for pavé and micro-pavé settings where small stones can loosen without being noticed.

The underside of the diamond is where most light-blocking grime accumulates and where it has the biggest impact on sparkle. Always scrub the bottom of the stone, not just the top. A diamond that looks dull from the front is almost always dirty underneath. If you have a lab-grown diamond, the cleaning process is identical — lab-grown diamonds have the same physical properties as natural diamonds. Keep a dedicated soft toothbrush with your jewellery for cleaning. Consider a small ultrasonic cleaner for home use — they are affordable and make weekly cleaning effortless.