How can you test a diamond without a tester?

Do real diamonds float or sink?

Simply drop the loose stone into the water. Because loose diamonds are so dense, they should sink to the bottom when dropped in a glass of water. Many diamond fakes – glass and quartz included – will float or not sink as quickly because they’re less dense.

How do you tell if a diamond is real without damaging it?

The Water Test

Drop the gem into a glass of water. While a fake diamond is often hollow inside, a real diamond is high in density. Therefore, if the suspect stone sinks straight to the bottom of the glass, it is a real diamond.

Is there an app to test diamonds?

New Android App to Detect Authenticity of Diamonds and Precious Stones. … Gem Selections has been the only trusted brand for Government Lab-certified Gemstones, Diamonds, and Jewellery since 1987.

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