Brilliant Earth
US: one complimentary resize within 60 days; eligible in-range rings can qualify for up to one year. Most eligible designs can be exchanged within 30 days. A complimentary ring sizer is offered.
Official policy (opens in a new tab)Ring resizing, return and sizer policies
Use this as a starting point before a surprise or online ring order. Policies vary by country, collection, metal and ring design, so the official product and policy page always wins.
Policy summary
James Allen
Eligible rings receive one complimentary first-year resize; remanufacture and repeat resizes can cost extra. The stated return window is 30 days, and online or mailed sizing tools are available.
Official policy (opens in a new tab)Blue Nile
Eligible rings can receive one first-year resize, generally within two sizes and before a prior resize. Eligible unworn items have 30 days to return or exchange; an online sizer is linked.
Official policy (opens in a new tab)Tiffany & Co.
Tiffany states that engagement-ring purchases receive complimentary resizing. US eligible saleable items generally have 30 days for return or exchange; a size guide and store fitting are available.
Official policy (opens in a new tab)Zales
Resizing is assessed as a repair service; paid protection plans list changes up or down two sizes when the design permits. US returns are listed as 30 days and exchanges as 60 days; a size guide is published.
Official policy (opens in a new tab)Mejuri
The reviewed return terms do not state a complimentary resizing or free-sizer promise. They list free 30-day returns for eligible unworn items in the US, Canada, UK, Australia and Germany.
Official policy (opens in a new tab)Before you rely on a policy
Can I rely on a retailer policy to guess a ring size?
No. A resize or exchange policy is a fallback, not a sizing method. Measure first and confirm a non-resizable, engraved or expensive ring before ordering.
Why does the table not show one universal resize promise?
Eligibility differs by retailer, country, ring design, metal, size change and previous alterations. The linked official policy controls.