Jewelry stamps or markings ID metal

Sometimes a ring w/ no stamps or markings inside ring shank. Usually you’ll see karat content stamp like 14k (gold), PLAT (platinum), or 925 (sterling silver)). The U.S.A. has many regulations on correct stamp of karat content in rings etc sold. Jewelry items should be properly marked & identified, or sod as costume jewel: nickel, palladium, brass, copper. 1 thing to be conscious of are allergies that cheaper metals may bring, could break your skin out in ugly rashes.