Our Triple Guarantee

The Diamond Nexus
Money-Back Guarantee:


Inspect, enjoy, and wear your Diamond Nexus jewelry for 30 days. If you are not thoroughly satisfied, even elated, your full merchandise purchase price will be quickly and cheerfully refunded.

The Diamond Nexus
Lifetime Performance Guarantee:


Diamond Nexus Simulants have all the lifetime wearability of natural diamonds. A Diamond Simulant is forever. If any Diamond Simulant ever fades, discolors, or becomes damaged, a free replacement will be granted.

The Diamond Nexus
Lifetime Stone Loss Guarantee:


If a Diamond Nexus mounted stone is ever lost from its setting, we will replace it with only a nominal re-mounting charge. You do not need to purchase insurance to cover your Diamond Simulant against loss.

Products covered by Limited Warranty

Only our Diamond Simulants can be covered under our lifetime guarantee and can be replaced if lost. However, if you are not satisfied with your purchase within 30 days, you will receive a full and prompt refund.

Please Note

  • Altering, re-sizing, repair, or resetting any Diamond Nexus merchandise by anyone other than Diamond Nexus voids the warranty and all guarantees. If you require a repair, stone setting, or re-sizing please contact us at 800.509.4990. We will be more than happy to assist you promptly and your guarantees will remain intact.
  • If you have purchased loose Diamond Simulants and are having them set by someone other than Diamond Nexus, please tell your jeweler that the Diamond Simulants should be set as though they are rubies. The Diamond Simulants will not take direct heat. That said, we recommend having Diamond Nexus set your Diamond Simulants in order to keep your warranty intact.
  • While we understand it may be difficult to choose the perfect piece of Diamond Nexus jewelry, we can only allow four exchanges of any item of the same nature (the fourth would be non-returnable). If you would like assistance while shopping, please call our Customer Care Representatives at 800.509.4990 or speak with one of our Live Chat agents.


Need resizing or repair service on your Diamond Nexus jewelry?  Click here!

Want to return or exchange your Diamond Nexus jewelry?  Click here for returns, or click here for exchanges.  If you received your jewelry more than 30 days ago, click here for our trade-up policy.
You're now entered to win a $2,500 Diamond Nexus shopping spree. Don’t let that stop you from shopping though, if you make a purchase and win, we’ll simply credit your account. Make sure you watch your email for more information from us and enjoy shopping our site