How do I know if a diamond is real or fake?

How can you tell that a diamond is real?

To test the diamond’s refractivity, place the stone on its flat side onto a piece of newspaper with lots of lettering. Make sure to use bright lighting and that no objects are casting a shadow on your diamond. If you can read the letters from the newspaper — whether they appear blurry or not — then the diamond is fake.

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.

Can a fake diamond cut glass?

For example, one old adage holds that a real diamond will cut glass, whereas a fake will not. While it’s true that diamonds are hard enough to cut glass, some synthetic gems can also scratch glass.

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.

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.

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Do diamonds shine or reflect?

The short answer is that they are expertly cut and polished to maximize the diamond’s natural brilliance. … Diamonds get their brilliance from three things: reflection, refraction and dispersion. Reflection is the light that hits the diamond and is immediately bounced back up, giving it an instantaneous shine.