Golden DIY: How to Test Gold at Home with Toothpaste Tricks

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Golden DIY: How to Test Gold at Home with Toothpaste Tricks

You just acquired a piece of gold jewelry or discovered an old heirloom, but how can you check if it’s real gold or just gold-plated? While professional methods like acid testing or XRF scanners provide the best results, you can get a good idea using simple household items. How to Test Gold at Home with Toothpaste is a classic DIY method that’s easy to try. Here’s how it works and what to look for.

How to Test Gold at Home with Toothpaste: Why Use Toothpaste?
Gold Rings

Toothpaste contains mild abrasives to polish teeth. These abrasives make it effective for rubbing off other metals that may be coating a gold item. Toothpaste is readily available, gentle enough not to damage gold, and easy to experiment with.

However, the toothpaste test should only be considered a preliminary check for gold authenticity. Professional verification is still recommended for very valuable items.

How to Test Gold at Home with Toothpaste: What You’ll Need?

  • Item to be tested (jewelry, coin, bar)
  • White, non-gel toothpaste
  • Soft cloth or paper towel
  • Magnifying glass
  • Tweezers or pliers (optional)

How to Test Gold at Home with Toothpaste Step-by-Step:

  1. Clean Item
    Examine the item closely with a magnifying glass and clean off any dirt or grime with a soft cloth. This allows you to inspect the surface and see results better.
  2. Apply Toothpaste
    Squeeze out a 1 cm blob of regular white toothpaste onto a paper towel or cloth. Do not use gel toothpaste.
  3. Rub on a Small Area
    Use a corner of the cloth to rub the toothpaste firmly onto a small inconspicuous area of the item for 30-60 seconds. The mild abrasives will remove surface materials.
  4. Rinse and Dry
    Rinse the item thoroughly with cool water to remove all toothpaste. Blot dry completely with a clean cloth or paper towel.
  5. Inspect
    Use the magnifying glass to closely inspect where you rubbed with toothpaste. Genuine high-karat gold will retain its original shiny golden color. Fake gold plate will show black, silver, or coppery metal underneath once the top layer is scrubbed off.
  6. Repeat on Multiple Spots
    Test 2-3 different small areas on the item to verify results. Gold purity should be uniform. Note any deep crevices or seams that are prone to plating wear.

How to Test Gold at Home with Toothpaste What to Look For:

Authentic solid gold will pass the toothpaste test, while fakes expose their true colors. Here’s what to expect:

  • Real gold remains golden colored and shiny where rubbed.
  • Gold-plated or gold-filled items will show black, silver, or copper underneath.
  • Solid gold may lighten slightly if very low karat, but no metal shows.
  • Alloys like white gold or rose gold can have subtle color changes.

Toothpaste is mildly abrasive so repeated rubbing can eventually remove thin plating even on real gold. Start with gentle pressure and don’t overdo any one area.

How to Test Gold at Home with Toothpaste Advantages and Limitations:

At-home gold testing with toothpaste offers these benefits:

  • Quick and inexpensive screening
  • Uses standard household items
  • Easy to perform
  • Indicates plating wear

How to Test Gold at Home with Toothpaste But there are limitations to be aware of:

  • Cannot determine exact gold karat purity like professionals
  • May not work well on gold alloys
  • Only tests surface and small areas
  • Won’t catch sophisticated gold-plated fakes

For very high-value items, it’s still wise to use professional jewelers who can acid test purity across the whole piece and verify the authenticity of details like diamonds. But toothpaste provides a handy starting point for basic gold integrity testing.


  • White, non-gel toothpaste can remove thin gold plating due to mild abrasives
  • Rub on multiple inconspicuous spots and rinse
  • Genuine gold stays shiny yellow; plating reveals black, silver, or copper
  • It screens for plating wear but cannot verify the exact karat level
  • For very valuable pieces use professional acid testing for precision

While not definitive, the toothpaste test lets you quickly and easily spot possible gold-plated fakes at home with standard supplies. Learn the technique and telltale signs of quality to protect against scams.

How to Test Gold at Home with Toothpaste FAQS:

What kind of toothpaste works best?
Answer: Regular white toothpaste works best. Avoid using gel toothpaste which is less abrasive. Sensodyne and other brands work.

How much pressure should I use?
Answer: Rub gently at first, increasing pressure gradually. Too much-repeated rubbing can wear down plating on real gold. This is just a screening test.

How do I test white gold?
Answer: Look for a consistent silver or pale yellow hue after rubbing. Rhodium plating may show darker. Solid white gold won’t expose copper or other metals.

Should I test the jewelry I’m selling?
Answer: Yes, it lets you honestly disclose any plating issues or inconsistencies first. This builds trust with buyers and protects your reputation.

Is there a better at-home method?
Answer: A gold testing kit is better for identifying karat levels. Magnets can detect some fakes. For maximum certainty, get professional verification like acid testing of the whole piece.

In summary, toothpaste is an accessible preliminary check for possible gold-plated items. While not definitive, it can help spot potential issues and imposters. Verify promising antiques and valuables through certified jewelers or appraisers to be certain of gold purity and authenticity.

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