How to Spot a Fake Gem

Spot a Fake Gem

• 1

  Avoid a deal that seems too good to be true. The first sign of a fake gem is usually an obviously low price. Counterfeit gems often pop up in tourist areas and at cruise ship ports where a low price attracts buyers.

• 2

  Get as close as possible to the gem by using a loupe. A loupe acts as a magnifying glass, allowing the intricate details inside the gem to become more apparent. The higher your magnification, the easier it will be to spot a fake.

• 3

  Look under the gem. While this may seem obvious, it is absolutely necessary if your gem is mounted in a setting to remove it and look at all sides. From foiling a diamond to make it appear more brilliant to painting the tip of a gem to make a color stand out, many deceptive practices can be hidden by a setting.

• 4

  Look for uneven color, which could mean a poor dye or paint job. Stones like opals are often dyed to pass them off as the higher priced blue opal.

• 5

  Compare known fakes with real gems if you have the access. First-hand experience makes spotting a fake easier. Consider taking a gem class or workshop to gain access to samples.

Ask an Expert

• 6

  Don't hesitate to the dealer or jeweler what type of gem you are purchasing--imitation, synthetic or natural. A reputable dealer will disclose this information and discuss the merits of each type.

• 7

  Pay to have your gem evaluated. Have a dealer or jeweler test the gem to see if it is real and provide a certificate of authenticity. Most reputable dealers will not provide this service for free, so check with the Gemological Institute in your area for the fee schedule (see Resources below).

• 8

  Have your gem independently appraised before making a purchase. An outside dealer will be able to spot a fake right away along with confirming the value.