There are several ways to tell if a diamond is real, but the easiest is to take it to a licensed jeweler. If this is not an option, there are several home-test methods to determine a diamond's legitimacy, such as pen marking or weighing the gem.Know More
If determined to test the diamond without a jeweler's help, whether the diamond is loose or mounted, usually determines how to test it. The pen mark method only works for loose diamonds, but is the easiest. The diamond should be placed on a white piece of paper with a small mark or dot, with the flat side of the diamond place directly onto the dot. In a fake diamond, the dot will reflect through as a ring, but a real diamond breaks up the image of the dot hundreds of times, causing the stone to darken, but no dot or ring is visible.
For weight testing, it is important to know the carat weight of the diamond and the weight of the mounting. A jeweler's scale can be used to weigh the gemstone and subtract the mounting weight from the total. A real diamond will weigh about 200 milligrams per carat while a cubic zirconium will be almost twice that number.Learn more about Precious Metals & Gems
Diamond is the hardest mineral on the Mohs scale of mineral hardness, with a rating of 10, and is four times harder than the next mineral on the chart, corundum, of which sapphire and ruby are varieties. The Mohs scale is the most common system used for this measurement. It is a relative scale, grading the comparative hardness of 10 common minerals and their resistance to scratching.Full Answer >
Determine the authenticity and value of pearls by conducting the tooth test and inspecting the color, surface thickness, luster, shape and size of the pearl as well as any blemishes. This process does not require any specialized equipment.Full Answer >
The girdle is the part of a diamond gemstone that separates the crown, the top portion, from the pavillion, the lower portion. A girdle is generally the widest part of a cut diamond and establishes the circumference of the gem.Full Answer >
A canary diamond is a bright yellow diamond. Though people think of a clear or white diamond when they think of a quality diamond, colored diamonds can be even more expensive.Full Answer >