How can u tell a fake diamond to a real diamond without taking it to a jeweler?

11 Comments on “How can u tell a fake diamond to a real diamond without taking it to a jeweler?”

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1. SANCHA says:

   Website content

   A true diamond will cut glass; a fake won’t.

   June 30th, 2009 at 8:25 pm

2. brooks b says:

   Create a video blog…instantly.

   It is not that hard to cut glass, so I’m sure most fakes would also cut (scratch) glass. It would be absurd for an untrained person to claim they could tell the difference between a real and fake diamond.

   edit: please don’t think that because your stone cuts/scratches glass that it is a real diamond — the people that keep telling you that this will show you a fake simply don’t know what they’re talking about. Glass is not nearly as hard as most people think. A chunk of quartz will also scratch glass – that doesn’t make it a diamond.

   July 2nd, 2009 at 2:33 am

3. Scooter_MacGyver says:

   Create a video blog

   Try this, fill a clear glass with about 1cm of water, drop the diamond in. A real diamond wil utterly dissapear, while a fake will remain slightly visible.

   July 4th, 2009 at 8:30 pm

4. Soccer Coach says:

   Kansieo.com

   It will scratch glass.

   Coach

   July 5th, 2009 at 11:46 pm

5. Mike S says:

   jeweler

   ALL real diamonds have carbon flaws. If you were to look at it with a jewelers loupe, you could probably find a flaw in it. Fake diamonds are for the most part flawless.

   July 6th, 2009 at 1:00 pm

6. MAGGIEMAGGOO says:

   Kansieo.com

   I’ve heard that trying to cut glass with it, a diamond will, an imposter will not cut glass hope it’s reall…lol

   July 7th, 2009 at 11:59 pm

7. Blaman1 says:

   jeweler

   Heh I know this doesn’t help you much probably but check this out.

   July 11th, 2009 at 10:50 am

8. the flower mane says:

   Kansieo.com

   WITH ACUP OF KRESHED ICE IF STIKE THE DIMOND IN THE ICE THE FAKE ONE WILL FAGE LIKE GLASSE AND THE REAL DIMOND WILL NOT,

   July 12th, 2009 at 11:12 pm

9. Wibble says:

   Caffeinated Content – Members-Only Content for WordPress

   Fakes Diamonds are CZ’s (cubic zircona). A simple test to tell if it is fake or real is to draw a dot on a sheet of paper and place the diamond table faced down. (The flat end down). If you see a circle then it is fake. See the link attached with pictures and text on what to look for.

   July 13th, 2009 at 12:05 am

10. kate says:

    Create a video blog…instantly.

    Manufactured diamonds (cubic zirconia) are very hard and will cut glass too (don’t confuse with rhinestones which are glass or acrylic to simulate diamonds).
    Although you can distinguish between rhinestones & diamonds yourself, you should go to a jewelor to distinguish between raw & manufactured diamonds

    [edit] Diamond Substitute

    Single crystals of the cubic phase of zirconia are commonly used as a substitute for diamond in jewellery. Like diamond, cubic zirconia has a cubic crystal structure and a high index of refraction. Discerning a good quality cubic zirconia gem from a diamond is difficult, and most jewellers will have a thermal conductivity tester to identify cubic zircona by its low thermal conductivity (diamond is a very good thermal conductor). This state of zirconia is commonly called “cubic zirconium,” “CZ,” or “zircon” by jewellers, but these names are not chemically accurate. Zirconium silicate (ZrSiO4), is the naturally occurring silicate mineral zircon. Its transparent form is also used as a gemstone, and its opaque form as a refractory.

    July 15th, 2009 at 11:15 pm

11. Drafter_Guy says:

    Caffeinated Content

    What do you mean by ‘a fake diamond’ ? A C.Z., or one of those new lab created diamonds, AKA moissanite? Moissanite diamonds are so similar to diamonds that they are often mistaken as real diamonds by professional jewellers. There are slight differances, but they are hard to see without a 10x jewellers loup. As for cutting glass, a diamond is the hardest substance known. Diamonds rate a hardness of 10 on the Mohs Scale, Moissanite a 9.5, widow glass a 5.5. So a moissanite diamond would easily etch glass.

    Diamonds vs. Cubic Zirconium

    While you have both a diamond and a CZ do these two tests…exhale on both and they will both cloud, one cloud will stay MUCH longer than the other. Then run a felt tip pen over both, on one the line will stay put and on the other the ink will bead up. Which is which? The ink will bead on the diamond, and the fog will remain on the CZ. Both tests are assuming the stone in question is mounted, if it’s loose you can just weigh it. CZ weighs so much more than diamond it’ll be obvious with any chart or gauge.

    Or use a black light – diamonds will usually glow blue, cubic zirconia will glow mustard yellow.

    P.S. Wikipedia is not a reliable source. It is editable by anyone, with nobody to check the facts of the post. Try and find a reliable source for your information. Ex. Donald Rumsfeld (ok, that part is a joke) but he is a good analogy to Wikipedia. (could say anything, nobody to answer to.)

    July 18th, 2009 at 2:47 pm

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