The below measurements are approximate:
5/16" Seamless rings:
3/8" Seamless rings:
This design is made of solid 14K gold. The 14K white gold is palladium based, and neither it nor the rose gold is rhodium plated. The white and rose gold alloys contain some elements that may oxidize slightly over long periods of time. They will benefit from occasional polishing or professional cleaning.
To open seamless rings, twist to the side rather than pulling apart to preserve the shape of the ring.