If the necklace is silver it means it was made using Sterling silver.
noggin ruckus
It means that its 2500
I had the same thing stamped on my 10k gold necklace. I called a jeweller and they weren't very helpful but they told me it was most likely the brand name.
725 stand in the necklace it is very low silver. For Real!
worldwide
L stamped inside a ring
GB can mean the following: Gold bond, which in case it is less than real. It could also stand for the makers mark or a specific hallmark relative to the country the ring was made.
The hallmark 962 on jewelry typically indicates that the piece is made of platinum. Hallmarks are symbols or numbers stamped on precious metal items to certify their authenticity and quality. In this case, 962 signifies that the jewelry is 96.2% pure platinum, which is a high level of purity for platinum jewelry. It is important to look for and understand hallmarks when purchasing jewelry to ensure you are getting a genuine and high-quality piece.
RSG stamped on a silver ring likely stands for "925 Sterling Silver," indicating that the ring is made from 92.5% pure silver. This stamp is a common hallmark used in jewelry to show the silver purity level.
Gold Plated
It might be someone's initials.....
Self Addressed Stamped Envelope