TYS Jewelers - How can you tell if a diamond is fake

How can you tell if a diamond is fake?

Experts recommend doing your homework before trying out the options below. On the market, there are a variety of diamond alternatives, some of which have their own value while others aren’t. It’s also crucial to understand the distinction between mounted and unmounted diamonds. It’s easier to inspect a loose diamond or one that hasn’t been placed in a setting for both authenticity and defects.

The mounting of mounted diamonds can hide any cracks and chips, as well as reflect light back into the diamond, making it difficult for anyone other than competent jewelers to judge the stone’s color or clarity. If you wish to buy a mounted diamond, ask the jeweler to take it out first so you may check it while it’s loose.


Put the stone in front of your mouth and blow into it to see whether it’s genuine. It’s real if it clears up after a second or two, but it’s a fake if it stays fogged for three seconds or more. Diamonds distribute heat instantly, preventing fogging. Check if your diamond is clean and free of oils before attempting this test.


This is probably the simplest technique to tell if your diamond is real or not, although it isn’t conclusive. Toss your diamond into a glass of water. Because of the great density of the stone, if the diamond is real, it will fall to the bottom of the glass. It will float on the water’s surface if it is a forgery. Because not all fake diamonds float in water, you may need to use another method.


Hold your diamond up to the light with a magnifying lens to check for flaws. If you can’t locate any, it’s probably a fake; most true diamonds include inclusions, which are defects. While perfect diamonds do exist, they are either extremely expensive or lab-created. However, don’t toss the stone away after this since you could be holding a pristine, highly precious diamond.


A black light is required for this one. Turn off your lights and set the diamond under the UV light once you’ve received it. Wait for it to react and see what hue it gives out; most diamonds will glow blue under UV light, but not all of them will. If the stone has a slight green, gray, or yellow fluorescence, it isn’t a diamond. Keep in mind that this isn’t a complete proof test, and not all diamonds will show a blue hue, therefore it’s better to have a diamond professional evaluate the stone using their sophisticated equipment.


A loupe is a small magnifier that jewelers use to see fine details up close. Loupes are commonly used by jewelers to examine diamonds for clarity and quality. A diamond professional, on the other hand, will have access to a loupe, which they will use to inspect your diamond for blemishes and flaws. While a fake diamond can have a faultless structure, a real diamond will have minor defects called inclusions that cannot be reproduced.

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