Diamonds score 10 on the Mohs scale — the hardest natural material known — so it surprises many people how quickly a diamond ring can look lifeless. The stone is not damaged; it is almost always just dirty. Here is why it happens, how to fix it safely at home, and the storage habits that protect both the stone and its setting.
Why do diamonds go dull and cloudy?
Diamonds are naturally attracted to grease — they are what chemists call lipophilic, and this property is so reliable that grease-coated belts are actually used to separate diamonds from ore in mining. In daily life it means every touch of a fingertip, every hand cream, every washing-up session leaves a fine oily film on the stone. That film scatters light instead of letting it enter the stone and bounce back — and the fire disappears. The good news: cleaning restores it completely.
How do you clean diamond jewellery at home?
A bowl of warm water with a few drops of washing-up liquid, a 20–30 minute soak, then a gentle scrub with a soft toothbrush — especially underneath the stone, where grime collects against the setting. Rinse (with the plug in) and dry with a lint-free cloth. Doing this every couple of weeks keeps a frequently worn ring bright. Avoid bleach and chlorine entirely: they will not harm the diamond but can attack the metal of the setting.
Can a diamond chip or break?
Yes. Hardness means resistance to scratching — not to impact. A sharp knock on a hard edge, particularly on a stone with an exposed pointed girdle or corner, can chip even a diamond. Take rings off for gym sessions, gardening and heavy lifting, and have a jeweller check the claws roughly once a year: a loose claw is how most diamonds are lost, and tightening one is a quick, inexpensive job.
How should you store diamond jewellery?
| Do | Don't |
|---|---|
| Store each diamond piece in its own compartment or pouch | Drop diamond pieces loose into a jewellery dish with everything else |
| Fasten chains before storing to prevent tangling | Let diamonds touch other jewellery — a diamond scratches gold, silver, pearls and every softer gem |
| Keep pieces somewhere cool and dry | Store jewellery in the bathroom |
The separate-compartment rule matters twice over for diamonds: the stone can scratch everything it touches, and its own polished facets are best protected from knocks against other metal.
Is an ultrasonic cleaner safe for diamonds?
Usually, for a plain diamond in a secure setting — but not always. Ultrasonic vibration can loosen stones in worn settings and can damage diamonds with significant internal fractures or fracture-filled treatments. If you are unsure of your stone's history, warm soapy water does the same job with zero risk.
What if you love the look but not the upkeep?
Moissanite — a brilliant gemstone in its own right, often chosen as a diamond alternative — is cared for in almost exactly the same way, and actually picks up slightly less grease than diamond. You can read our honest moissanite vs diamond comparison, or browse the Moissanite Collection — pieces like the Moissanite Teardrop Pendant in sterling silver deliver the same fire with the same easy care routine.