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Diamonds are Forever: Using NIR to Find the Fakes

Wednesday, May 12, 2021
Teledyne DALSA, Machine Vision OEM Components

Cubic zirconia is easy and inexpensive to make and the diamond industry has long considered it an existential threat. Consider a diamond crusted band, what if some of those diamonds are actually cubic zirconia? Most people would never be able to tell, and even many retail jewelers wouldn’t notice. De Beers helped pioneer a new, inexpensive method for testing these small stones, using near infrared and time-gated imaging to tell colorless cubic zirconia from the real deal.

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