rj could be the maker's initials. 925 means that the metal fineness is 925 parts in 1000. Presumably silver, in which case it is 92.5% silver and 7.5% copper or other alloy, a standard for silver known as sterling.
The RJ probably indicates the manufacturer and the 925 indicates that the ring is made of 92.5% sterling silver.
what does 925 A mean
What does 925 inside a silver ring mean
Stamped inside a ring, the JS initials and the 925 mean the initials of the manufacturer and the karat of the ring. A ring that says 925 means that the ring has 925 karats.
RJ could be the maker's initials. 925 means that the metal fitness is 925 out of 1000. that means that it is real silver, that is the number used for silver, like on tiffany's jewlery it says 925 if it is real silver
925 on a ring mean
CI 925 Ring with lots of Diamonds
Ring size 6 that's what RJ 6 means.
The silver content is .925
What does cc .925 mean on rings
What does CNA 925 STAMP MEAN INSIDE A RING?
925 is the symbol for silver