Can Diamonds Get Scratched? Diamond Care Guide

You tilt your ring under a lamp, catch a thin line across the stone, and immediately wonder: can diamonds get scratched, or is something else going on? Yes, a diamond can be scratched, but only by another diamond or by diamond dust. Nothing else you touch in daily life is hard enough to mark the stone itself. Most of the time, what looks like a scratch on a ring is a film of lotion and soap, a worn spot on the metal, or a small chip on an edge.

We repair and inspect rings every week at our bench in Centennial. Below, we’ll walk you through what actually scratches a diamond, how to tell a real scratch from the things people mistake for one, and what you can do about it.

1. Diamonds are extremely resistant to scratches: A diamond ranks 10 on the Mohs hardness scale, meaning only another diamond or diamond dust can scratch it. Everyday items like keys, coins, glass, and countertops cannot damage the stone.
   
   

2. A scratched-looking diamond is often not actually scratched: Most marks people notice are caused by dirt, lotion, soap buildup, metal wear, or internal inclusions rather than surface damage to the diamond itself.
   
   

3. Diamond hardness does not mean it cannot chip: While diamonds resist scratches better than any other natural material, they can still chip or crack from strong impacts because hardness and toughness are different properties.
   
   

4. The ring setting usually shows wear before the diamond: Gold and platinum settings are softer than diamonds, so prongs, bands, and finishes can develop scratches and require regular inspections to keep the stone secure.
   
   

5. Proper care helps protect your diamond for years: Store diamond jewelry separately, remove rings during activities that can cause impact, clean them regularly, and schedule professional inspections to maintain the setting and stone.

Diamond sits at 10 on the Mohs hardness scale. That’s the top of the scale, and it means no other natural material can scratch it.

The Mohs scale is simple. A material can scratch anything below it and can’t scratch anything above it. It’s a ranking, not a measurement, so the gaps between the numbers aren’t equal. Diamond isn’t slightly harder than the stone below it. It’s dramatically harder.

So a diamond can only be scratched in a narrow set of situations. Your keys, your coins, your granite countertop, and the sand at the beach all sit far below a 10.

Look at where gold and platinum land. Your setting is far softer than your center stone. Hold onto that, because it explains most of what people see on a ring.

Hardness means resistance to scratching. Toughness means resistance to chipping and breaking. A diamond is the hardest material you will ever own. It isn’t the toughest.

Think of a ceramic coffee mug. It shrugs off a knife blade. Drop it on tile, though, and it still shatters.

Diamonds behave the same way. They have internal planes where the carbon atoms bond less tightly, a bit like the grain in a piece of wood. Hit a diamond at the wrong angle with enough force, and it can chip or split along one of those planes. That’s a completely different kind of damage from a scratch, and it’s the one worth guarding against.

The list is short.

This is the most common cause by a wide margin. Two diamonds rubbing together will mark each other, and it happens more often than you’d think.

Watch for these situations:

• Loose stones tossed together in a jewelry box or a drawer.

• A diamond eternity band worn tight against an engagement ring, so the small stones rub the center stone every time you move your hand.

• Rings stacked on the same finger with no spacer between them.

• Several pieces packed into one travel pouch.

If you wear a diamond wedding band next to a diamond engagement ring, that contact point is the spot to check first.

Industrial abrasives often contain diamond particles. Cutting discs, lapping wheels, and polishing pastes are common examples, and so are several bench tools we use in the shop. None of this affects the average wearer. It matters if you work with stone, tile, dental equipment, or metal fabrication.

Industrial abrasives often contain diamond particles. Cutting discs, lapping wheels, and polishing pastes are common examples, and so are several bench tools we use in the shop. None of this affects the average wearer. It matters if you work with stone, tile, dental equipment, or metal fabrication.

Very little in daily life is hard enough to mark a diamond, so here’s the reassuring list. None of these will touch your stone:

• Steel keys, tools, and utensils

• Coins and jewelry clasps

• Granite, quartz, and marble countertops

• Sand at the beach

• Sandpaper of any grit

• Glass, tile, and concrete

• Sapphires, rubies, and moissanite

If you scraped your ring against a doorframe and now you see a line, the stone is almost certainly fine. Something else is going on.

Here’s the part most articles skip. Knowing what to look for saves you a lot of worry.

A true surface scratch looks like a fine, straight, or gently curved line sitting on top of one facet. It stays on that single flat surface and doesn’t sweep across onto the facets next to it. Usually, you can’t see it in normal light, and it only shows up when you tilt the stone to a specific angle. Under 10x magnification, it looks like a hairline groove that doesn’t reflect light the way the rest of the facet does.

Most people who search for this are actually looking at something else. Here’s how to tell the difference.

1. Clean it first: Warm water, a drop of mild dish soap, and a soft toothbrush. Rinse and pat dry with a lint-free cloth. Roughly half the “scratches” we get asked about disappear at this step.
   
   

2. Use natural light: Stand near a window. Overhead LEDs throw a harsh glare that hides fine detail.
   
   

3. Tilt slowly: Rotate the ring a few degrees at a time and watch the mark. If it stays fixed to one flat surface, it’s on the outside. If it seems to shift and float as the stone moves, it’s inside the stone.
   
   

4. Magnify it: A 10x jeweler’s loupe costs very little, and your phone’s macro mode works in a pinch. Line the stone up against a plain white background.

Inclusions cause the most false alarms by far. They formed while the diamond grew; they’re recorded on your grading report, and they were there the day you bought it. New light in a new room just makes you notice one for the first time.

Yes, and this is where nearly all visible wear shows up. When people ask us whether diamond rings get scratched, the honest answer is that the ring gets scratched constantly, while the stone stays untouched.

Go back to the hardness table. Gold sits around 2.5 to 3. Platinum sits around 4 to 4.5. Both are softer than a house key, a car door, a shopping cart handle, and a granite counter. A ring worn every day picks up fine surface marks within weeks. That’s normal, and it’s expected.

Three things to watch on the setting itself:

• Prongs wear thin: The tips take the most contact. Over the years, they flatten, thin out, and lose their grip. Re-tipping is a routine, inexpensive repair, and it’s far cheaper than replacing a lost stone.
  
  

• Prongs bend or loosen: Catching a prong on fabric or a car door can pull it out of position. A stone that rattles or shifts is telling you something.
  
  

• White gold changes color: White gold is plated with rhodium. That plating wears off gradually, and the warmer gold tone underneath starts to show. It’s cosmetic, and replating restores it.

Try the shake test once a month. Hold the ring close to your ear and shake it gently. If you hear a faint click or tick, the stone has movement and needs attention soon.

This is the number one reason people walk into our store convinced something’s wrong.

Hand lotion, soap, sunscreen, hairspray, and natural skin oil collect underneath the stone where you can’t see them. Light has to enter through the top of a diamond, bounce around inside, and come back out to create sparkle. A greasy film blocks that path. The stone goes flat and lifeless, even though there’s nothing wrong with it.

Clean it every two weeks:

1. Mix warm water with a small drop of mild dish soap.
   
   

2. Soak the ring for 15 to 20 minutes.
   
   

3. Brush gently around and underneath the stone with a soft toothbrush.
   
   

4. Rinse under warm running water. Close the drain first.
   
   

5. Pat dry with a lint-free cloth.

Skip the ultrasonic cleaner at home. It can loosen a prong that’s already weak, and it can damage stones that have been fracture-filled or clarity-enhanced. It’s also rough on softer accent gems like emeralds, opals, and pearls. If you aren’t sure what’s in your ring, bring it to us, and we’ll clean it for free.

Since a scratch is unlikely, this is where your attention belongs.

Chips come from a sharp, concentrated impact. Slamming your hand into a doorframe. Knocking your ring against a granite counter. Catching it on gym equipment. One hard strike at the wrong angle is enough.

The vulnerable spots are the girdle, which is the thin outer rim of the stone, the culet at the bottom point, and any sharp corner on the outline.

Some cuts have more exposed edges than others.

• Higher risk: marquise, pear, princess, and heart shapes. Each one has a point or two sitting right at the outer edge of the ring.
  
  

• Lower risk: round, brilliant, oval, and cushion. Their outlines are curved, so an impact spreads out instead of concentrating.
  
  

• Depends on the setting: emerald and Asscher cuts have corners, but a bezel setting or V-shaped prongs cover those corners well.

If you own a pear or a marquise, ask us to check that the points are properly protected. It’s a five-minute look, and it prevents an expensive problem.

No. A lab-grown stone is a carbon crystal with the same structure as one formed in the earth, so it sits at 10 on the Mohs scale, too. It behaves identically when it comes to scratching, chipping, and daily care, and grading labs hold both to the same 4Cs standards. If you’re weighing the two, our guide on whether a lab-grown diamond is worth it breaks down the real differences, and you can browse our natural diamond selection alongside our lab-grown options.

Simulants are a different story. Cubic zirconia sits around 8 to 8.5, and moissanite sits at 9.25. Both are softer, and cubic zirconia in particular goes scuffed and cloudy after a year or two of daily wear. So if a stone looks hazy and scratched all over, evenly, that’s a meaningful clue. Our posts on cubic zirconia versus lab-grown diamond and how to tell if a diamond is real will help you sort it out.

Usually, yes. A cutter can polish a surface scratch out by removing a whisper-thin layer from the affected facet.

There are trade-offs you should know about first:

• The stone has to come out of the setting and go back in afterward.
  
  

• Polishing removes material, so the diamond loses a small amount of carat weight.
  
  

• Proportions can shift slightly, which occasionally affects the cut grade.
  
  

• Your original grading report describes the stone as it was. After a repolish, the measurements and blemish plot may no longer match, so you might want a fresh report. Our guide to IGI and GIA grading explains what those reports cover.

More serious damage is a bigger job. A chip usually calls for re-cutting, which means more weight loss and sometimes a change in outline: a chipped round can come back as a slightly smaller round or as an oval.

Here’s our honest position. Most surface marks are cosmetic, invisible at arm’s length, and not worth losing weight over. When someone brings in a stone with a surface mark, we look at it with them under magnification and give a straight recommendation. Sometimes that recommendation is to leave it alone. Our jewelry repair team will always tell you when a repair isn’t worth doing.

Prevention costs nothing, and it works better than any repair.

Give every piece its own soft pouch or its own lined compartment. Never let diamond jewelry sit loose in a pile. This one habit removes the main cause of a scratched diamond entirely.

• Lifting weights and gripping gym equipment
  
  

• Gardening and yard work
  
  

• Cleaning with bleach or chlorine-based products
  
  

• Swimming pools and hot tubs, since chlorine attacks the alloys in gold
  
  

• Beach days, because sand gets underneath the stone
  
  

• Moving furniture or hauling boxes
  
  

• Applying lotion, sunscreen, and hairspray

Put it in the same safe spot every time, never on the edge of a sink.

Use the soap and warm water method above. Regular light cleaning beats an occasional deep clean.

Bring your ring in every six months. We check prong tension, look for stress on the setting, examine the stone under magnification, and clean it properly. Do the shake test at home between visits.

If something on your ring is bothering you, let us look at it. Inspection and cleaning are free, and there’s no pressure to buy anything.

Miro Jewelers is at 6750 S. Emporia St., Centennial, CO 80112. Call us at 303-393-8881 or book an appointment online. Every piece we sell comes with a lifetime warranty, free first sizing, and a free appraisal, and our diamonds are conflict-free.

Yes, but only by another diamond or by an abrasive that contains diamond particles. Diamond is a 10 on the Mohs scale, the highest rating there is, so no other natural material can mark it. In everyday wear, the risk comes from two diamonds touching each other in storage or on the same finger.

The metal will, and fast. Gold and platinum are much softer than the stone, so a ring worn daily picks up fine surface marks within weeks. The diamond itself stays unmarked. Professional polishing restores the band, and rhodium replating refreshes white gold.

No. Even hardened steel only reaches about 7.5 on the Mohs scale. Keys, tools, coins, and utensils can’t scratch a diamond. They can scratch the setting and bend a prong, though.

No. Standard sandpaper uses aluminium oxide or silicon carbide, and both are softer than diamond. Only sandpaper or a disc made with actual diamond grit could mark the stone, and those are industrial tools.

A minor surface scratch has little to no effect on value, and it doesn’t weaken the stone or spread over time. Chips and fractures are a different matter, since they affect both structural integrity and resale value.

It can. Labs record surface blemishes and assign a polish grade that reflects the quality of the finish. If a stone was scratched before grading, it may show up in the plot or the comments. Anything that happens after grading won’t be on your report.

You can, but we’d rather you didn’t. Soap and shampoo leave a film that dulls the stone, and wet hands make rings easy to slip off. Chlorinated water is hard on gold alloys over time, too.

Tilt the stone slowly under good light. A scratch sits on the surface and stays locked to one flat facet. An inclusion sits inside and seems to shift position as the stone moves. Clean the ring first, since that removes the film behind most false alarms.

Can diamonds get scratched? Only by another diamond, and that takes real contact over time. Everything else you run into on a normal day is too soft to touch the stone. What you’re far more likely to be looking at is a film that washes away, ordinary wear on the metal, or a worn prong that needs a quick repair.

Store each piece on its own, clean it every couple of weeks, and have it checked twice a year. If you’re not sure about a mark on your ring, bring it in, and we’ll look at it with you under magnification. No guesswork, no charge.