Blue diamonds have a section of their carbon transfused with nitrogen to create a blue tint rather than the traditional clear white of most diamonds. According to Blue Diamonds USA, estimates are that for every 10,000 diamonds mined naturally from the earth, there is only one diamond of any color. This means that blue diamonds are extraordinarily rare, and therefore valuable. However, it’s possible to color cubic zirconia, glass or plastic, all common diamond imitations, to have the appearance of a blue diamond.
Hold the diamond up to the light and look through it. A blue diamond will distort and bend the light to where it looks sparkling blue. Imitations, such as glass or cubic zirconia will not show the same sparkle. They will also allow the light to pass through, offering very little bending or distortion. If the gem shows a direct line of light through it, it is probably not a diamond. Also, the dyes that fake diamonds use will not reflect the blue as intensely as the genuine article. Blue diamonds will show direct blue light as a reflection of their true color. Imitations will show a paled version of the blue color.
Compare the blue diamond to another diamond of equal size by weighing it on a carat or gram scale. Imitation diamonds will weigh about 60 percent more than a true diamond. So if a diamond of an equal size is lighter than the blue diamond, the blue diamond will most likely be a fake. You can allow a little wiggle room, but if the difference is drastic, it’s not a blue diamond.
Put the stone under a UV lamp. Fake diamonds will not show any color when reflecting UV light, but will show their true color, often a clear white. However, a blue diamond held underneath a UV light will display a swirl of deep blue and purple colors. This is the fastest way to find out if the blue diamond is real, because UV lights leave little room for misinterpretation.
Take the diamond to a licensed jeweler. Most jewelers have never seen a blue diamond, so it may take some time for them to verify the diamond's legitimacy. However, if all other tests leave you baffled, this is the best way to determine if the blue diamond is real. If it is real, the jeweler should tell you how much the diamond is worth. Higher-tier jewelers may even offer to purchase the diamond from you because of its rarity.
How to Tell If a Gem Is a Kunzite?
Types of Valuable Crystals
Kunzite Pricing Guide
How to Spot a Fake Tiffany Ring
How to Identify Red Jasper
How to Buy Diamond Jewelry in Vietnam
Strontium Titanate Vs. Diamond
How to Tell If a Silver Chain Is Real
How to Identify Types of Pearls
How to Tell If Coral Jewelry Is Real
How to Collect and Sell Turquoise ...
What Does Fake Gold Look Like?
How to Tell What Pearls Are Worth
What Is a Pink Amethyst?
Cubic Zirconia Vs. White Spinel
How to Spot Fake Costa Del Mar Glasses
How to Clean Garnet Jewelry
What Is the Luster of a Diamond?
Sterling Silver vs White Gold Wedding ...
Information on African Rubies
Cameron Burry has been writing professionally since 2006. He received his Associate of Arts degree from Lakeland College for English and writing, and holds two degrees from Murray State University: one in creative writing and one in English literature.