It stands for Yellow Lustrium, a Jewlers alloy
Yltm is a stainless steel gold tone metal only class ring companys use ok.
Is it real gold?
It stands for Lustrium which is a nickel bearing alloy with no intrinsic value, it can be yellow (YLTM) or white
You lie to much!
it means the ring is made of lustrium, not sure if spelled right. This marker is found on rings that look like white gold and YLTM is found on rings that are made to look like regular gold