How to remove stains from Corelle dishes

Corelle dishes are recognized for their durability and modern patterns. However, those who have loved their Corelle dishes for many years may have noticed two forms of discoloration. 

The main issue is rust stains that are likely to form on the edges of plates, cups and bowls. This is followed by thin gray lines that typically appear on plates. Read further to learn ways to remove stains from your Corelle dishes.

What are the causes of discoloration?

If you find rust stains on your Corelle dishes, the cause is typically the dishwasher. The racks in most dishwashers are made of metal and coated with vinyl to protect them from rust. 

In the long run, this vinyl coating will start to chip and peel away. Once this occurs, the dishwasher racks will start to rust, possibly transferring to your dishes. As a result, you might find small, but obvious, rust spots on the edges or rims of your dishes. If you hand wash your dishes and still notice rust on the edges, it might be time to replace your drying rack.

When it comes to gray lines, you are most likely to find them on your plates. These marks can form when the dishes rub against metal. The usual culprit is none other than serrated metal knives. Take note that the discoloration can also form if your Corelle dishes are directly exposed to metal dishes in the dishwasher. The best way to lessen these marks is to avoid using steak knives on your dishes and loading your dishwasher in a way where the metal pots and pans do not come in contact with your dishes throughout the wash cycle.

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Cleaning your Corelle dishes

Once your Corelle dishes have rust stains or gray marks, it is recommended to use a non-abrasive cleanser. If a sponge and minimal effort can’t remove the discoloration, you can use a nylon or plastic scrubber. 

You can also mix your cleaning powder with a small amount of water to create a paste. Coat the paste evenly on the rust or gray stain and let it work for a few minutes before rinsing it away. Don’t use any abrasive tools such as a ball of steel wool, or other type of scouring pad, since these can cause lasting scratches on your dishes.


After removing the rust stains and gray marks on your Corelle dishes, it is time to replace the racks in your dishwasher. Once you have new racks, your dishes will no longer end up with rust stains. 

If there are any cracks, chips, or deep scratches, stop using the piece and throw it away. Although Corelle is quite durable, it is made of glass. The damaged pieces might shatter or break unexpectedly and it is best to stop using them.

Does Corelle stain?

When Corelle is exposed to metal cutlery, it can end up with gray marks, especially on white or light-colored dishes, as well as in various types of Corelle patterns. 

Although these marks or stains do not always disappear after washing the plates in a dishwasher, they are not permanent. Simply sprinkle a small amount of powdered kitchen cleanser on a damp sponge and scrub on the marks. The abrasive cleaning power of the cleanser is strong enough to rub away these marks or stains without damaging your Corelle dishes. 

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How do you clean the edges of Corelle plate?

If you are going to wash your Corelle dishes using a dishwasher, always check that they are not in contact with metal pots and pans. Make sure that they are not exposed to a rusty rack in your dishwasher. 

Corelle dishes are easy to clean, sturdy and available in various styles. These dishes are not prone to rust since they do not contain any metal components. Sadly, if your Corelle dishes are exposed to a pot or pan that is rusty, the rust can shift to your dishes. In most cases, you might notice rust marks on the borders of your Corelle dishes or on their base. 

  • Position your Corelle dishes on a flat, clean surface. Use rubber gloves so that your hands are protected. Pour ½ teaspoon of a non-abrasive cleaner onto a nylon sponge or cleaning pad.
  • Scour the rust stain gently with the sponge or cleaning pad until the rust stain is removed.
  • Repeat steps 2 and 3 if there are other rust marks on your Corelle dish.
  • Wash in warm, foamy water. 
  • Rinse thoroughly using warm water.
  • Use a soft, clean cloth or towel to dry the dish.

How do you get grey marks off dishes?

Metal, gray marks on dishes occur once metal rubs against the surface of the dish. In most cases, metal utensils are the culprit – spoons, forks, and knives but it can occur with any metal object. Simply follow this cleaning technique that involves products you have at home. 

  • Combine 2 teaspoons of baking soda with a teaspoon of water to create a paste.
  • Add a few drops of dish soap to a scouring pad.
  • Apply baking soda directly on the stain marks and scrub.
  • Rinse thoroughly with water and repeat as needed. Depending on how bad the marks are, it might take some time and effort. 
  • Once the gray marks are gone: wash, rinse and allow to dry.
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Final thoughts

Corelle dishes can end up with undesirable gray marks and rust stains in the long run. Although they are easy to clean and durable, Corelle dishes can be marred by these stains. Luckily, with the methods described on how to remove stains from Corelle dishes, you can easily keep your dishes free from stains or discoloration, as well as preserve their pristine appearance.

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