Because of the complexities of the design, many jewelers deter customers from resizing their eternity rings or say it isn’t possible,” says Money, adding that this isn’t necessarily true, but it does take “a highly-skilled jeweler” to execute a resizing of an eternity band.  “Some elements that play a role in the feasibility of a resizing for this style are: Metal type, stone type, and setting,” Money says, adding that silver, gold, and platinum are easy to manipulate with heat but “the stone type can affect the process.” If you’re looking to resize a diamond ring, you might be in luck, Money says diamonds, rubies, and sapphires as “highly durable” and can withstand the heat. Opals and emeralds, however, cannot.  If you do want to get your diamond eternity band resized, Money says that the setting is the most important part to consider. “Stones set in a channel set—or between two strips of metal—will likely require alterations to the style as it’s the most difficult setting to work with,” she explains. “Hand, prong, or bezel-set eternity bands are easier settings as the gems can be reset even if they fall out during the process.