When testing, the tip is placed on the diamond, allowing the heat to pass through the diamond. The device detects heat rate transfer through the stone, telling whether it is a natural diamond. Modern diamond testers use electrical conductivity to let you know if you are dealing with a genuine stone.
Diamonds have very high thermal conductivity, they 'draw' heat, they are used extensively in the electronics industry to 'remove' (conduct) heat (they use diamond-coated components not gemstones), it is the high rate at which diamonds conduct heat that makes them react on a diamond tester and which makes them feel ' ...
Yes, lab diamonds have the same carbon composition as natural diamonds. Therefore, they have the same thermal conductivity. The test results are positive when exposed to the diamond tester, since the diamonds have the same physical and chemical properties as natural diamonds.
A Diamond Tester can't be wrong, will detect the rate at which the heat moves through the stone.
Unlike simulant diamonds, like cubic zirconia and moissanite that are made from completely different minerals to diamonds, diamond testers will be able to recognise that lab-grown stones share the same thermal and electrical levels as mined diamonds and would therefore be able to highlight them as real diamonds.
Interpreting the Results of the Test:
If LED lights up to the red zone with three periodic bees, the stone being tested is a diamond. If LED lights up only to the green and/or yellow zone, then the stone is a stimulate or non-diamond.
From a monetary standpoint, however, your lab grown diamonds aren't going to hold very much value after they are taken out of the store. Almost all diamonds you buy will drop in price once worn, but lab grown diamonds are particularly susceptible to losing value after purchase.
The test is to simply scratch the loose stone against a mirror. The idea is that if the stone is hard enough to scratch the mirror, it's probably a diamond.
Get a glass full of water and simply drop your diamond into the glass. If the diamond is real, it will drop to the bottom of the glass due to the high density of the stone. If it's a fake, it will float on the surface of the water.
By holding a diamond close to a source of light, such as a flashlight, you can tell whether or not it's real. Watch closely for the shimmers of light that shine from the stone. A real diamond will reflect light easily, and provide you with a disco ball or rainbow-like display.
Are Diamond Testers Accurate. Diamond testers are perhaps the most accurate and reliable instruments to test the authenticity of a diamond. However, testers that measure thermal conductivity cannot tell an authentic diamond from moissanite because these gems are similar in heat transfer.
Lab grown diamonds are identical to earth mined diamonds in every way, except that they are grown in a lab. They have the same chemical, physical, and optical properties as mined diamonds and exhibit the same fire, scintillation, and sparkle.
If your diamond tester has a scale, you'll want it to light up all the way to the end, to the red zone. This indicates that your diamond is real. If the scale lights up to the green or yellow zone, this means that your diamond isn't real or that it's another gemstone or diamond simulant.
It can also be used for testing sapphire, ruby, crystal, agate and other stones.
A diamond tester distinguishes diamonds from all other minerals except moissanite. After determining that your stone is probably a diamond by using a diamond tester, you test it if you need to be certain it is not a moissanite. Learn about moissanite testing.
A real diamond appears gray and white inside (brilliance) when held to the light and can reflect rainbow colors (fire) onto other surfaces. A fake diamond will display rainbow colors within the stone when held up to light.
We all love how a diamond shines in the sunlight. Test your stone by putting it in direct sunlight and examining the colors it reflects. A real diamond will reflect both rainbow colors as well as white light. If you only get one of the two, then the diamond isn't real.
They have NO resale value.
Unlike natural diamonds which holds value over time, laboratory-grown diamonds are industrial products that are factory produced in matters of weeks. Since they are not rare and easily mass produced, there is NO secondary market for them.
As outlined, we believe that lab-grown diamonds may not be a good financial choice because they may not retain value in the future. We also think they lack the romance and allure of natural diamonds while not necessarily providing any environmental benefits (this is still up for debate).
Can you resell a lab created diamond? Yes, you can resell a lab grown diamond. Ada Diamonds buys independently-graded, high quality lab diamonds from the public through our Public Purchase Program. We also offer lifetime trade-in on all of our independently-graded lab grown diamonds.
A diamond tester will only test positive for diamond and moissanite. Synthetic moissanite has been used as a gemstone only since the 1990s, so if your piece is from an earlier era, it's definitely a diamond if it passes this test!
Inspect the Diamond
Place the gemstones in a glass of water and watch. If it floats, then it is probably a fake stone. Real diamonds will sink to the bottom of the glass, while cubic zirconia will float to the surface.
CARLSBAD, Calif. – Feb. 27, 2013 – Owners of Android phones and tablets like the Kindle Fire and Samsung Galaxy can now benefit from GIA's (Gemological Institute of America) free interactive diamond app for consumers and retailers, available in both English and Simplified Chinese.