Alliance rings in jewelry, often known as eternity rings, are a type of ring characterized by a continuous line of identically cut gemstones—usually diamonds or other precious stones—set around the entire circumference of the band. These rings symbolize unending love, commitment, and eternal partnership, making them a popular choice for anniversaries, special occasions, or as wedding bands.

Full Eternity Rings: Feature gemstones set around the entire band. This design offers maximum sparkle and is often considered more luxurious, but it can be more challenging to resize.
Half Eternity Rings: Feature gemstones set along the top half of the band. These rings are often more comfortable for daily wear and easier to resize while still retaining significant visual impact.
The gemstones used are usually diamonds, but other precious stones like sapphires, rubies, or emeralds can also be set in an alliance ring for a personalized touch.