The jewelry must be in "perfect saleable condition". It cannot be altered, engraved, or show signs of wear.
Because Tiffany does not offer cash for older pieces, owners often turn to the secondary market. Tiffany jewelry tends to hold its value better than unbranded pieces, often fetching of its original retail price.
Items can be returned for a full refund within 30 days of the original purchase.
This applies to select individually registered solitaire diamond designs with a diamond of 0.18 carats or larger .
Personalized or custom-engraved items are typically ineligible for return or exchange. The Tiffany Diamond Upgrade Program
The primary exception to the "no buyback" rule is the , specifically for engagement rings: