For most jewelry items, including their popular sterling silver collections, you can only receive a refund if you are within the initial purchase window.

For purchases over $75,000 , no refunds are issued; they are eligible for exchange only. 2. The Diamond Engagement Ring Upgrade Program

While Tiffany & Co. is famous for its iconic blue boxes, their "buyback" policy for used jewelry is essentially non-existent.

Personalized, altered, or engraved items cannot be returned or exchanged.

Instead, the luxury jeweler operates through two very specific programs: a strict 30-day return window and a diamond upgrade program for engagement rings.