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Use coupon code WELCOME10 for 10% off your first order.

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Jewelry Authentication Service


We are happy to provide jewelry authentication services, completed by a GIA Certified Accredited Jewelry Professional. 

Receive a certificate with your gemstone/jewelry.

A Gemstone Authentication means that gem professionals report on the condition, grade, and qualities of the stone to certify its authenticity. This is to ensure that the stone is properly identified in terms of type, quality, weight, origin, treatment, etc.

The gemstone is put through a series of tests to discover its qualities, Then those qualities are reported in the certificate of authenticity.

  • Apr 23 Order Placed! After you place your order, NNJ Designs will take 2-4 days to prepare it for shipment.
  •  -  Order Ships! NNJ Designs puts your order in the mail. Expect delivery in 3-5 business days!
  •  -  Delivered! Need it sooner? Ask about expedited shipping options!

Free 30 Days Returns

Free shipping on orders over $100

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Jewelry Authentication Service