How to Identify Diamonds

Each diamond is unique. If a diamond is not distinct enough, many jewel cutters will actually create a distinctive mark on the stone to make it easier to identify.

If you own a valuable diamond, then you need to be able to identify it as yours. Not only will this prove invaluable in the event that it is stolen, it can also help you guard against jewelry repair fraud (when a jeweler switches diamonds in jewelry for fakes or less valuable stones) and help you take out and maintain an insurance policy on your stone. Furthermore, if you can identify distinguishing traits that make diamonds different from other gemstones, you will be able to determine whether something is a good deal or just a good faux stone.

Things You'll Need

• Good light
• Diamond diagram
• Jeweler's lens

Instructions

1. Look for flaws. Diamond stand-ins like cubic zirconia do not have flaws. If you cannot see any interior inclusions in a stone, then it is almost certainly not a diamond. Almost all diamonds have at least one interior inclusion that is unique to that stone.

2. Check for sharp corners. Diamonds are used to cut some of the hardest substances in the world because they hold a sharp edge better than almost any other medium. If a stone has rounded points instead of sharp facets, then that stone is likely a fake. It is difficult to nearly impossible to wear away the corners of a real diamond.

3. 

   Ask an independent jeweler for a diamond diagram. If you bought a certified diamond, then it probably came with such a diagram. However, if the diamond was a gift it is likely that you do not have access to this important paper. A diamond diagram illustrates exactly where your diamond's unique anomalies and irregularities are located. Responsible jewelers will go over this diagram with you before you leave your stone in their keeping and again when you retrieve your jewelry. If a jeweler is reluctant to do this, then you should reconsider leaving your jewelry in their care.

4. 

   Have your diamond laser engraved. Many jewelers can use a laser to engrave the thin edge of a diamond with a special saying, a serial number or your name. This engraving is impossible to see without a jeweler's lens and is nearly impossible to replicate exactly.

Tips & Warnings

• Once you find a jeweler that you like and trust, try to take your jewelry to them whenever possible. If you cannot use their service, ask them for a reference.