.125 = 12.5% so, in essence mainly not silver - likely to be nickel amongst other base metals
It means that its 2500
If the necklace is silver it means it was made using Sterling silver.
It is a silver mark. It means 82.6% silver (high content but not sterling which must be 92.5% [925 mark]).
A "mark ejc" in silver likely refers to a hallmark or stamp indicating the silver content or quality of a piece. The term "ejc" may stand for the initials of a specific silver manufacturer or silversmith. To accurately identify the meaning of "mark ejc" in silver, further research into the specific hallmark or context in which it appears would be necessary.
The silver hallmark UJEP Hallmark H100 likely refers to a specific silver manufacturer or silversmith. The "UJEP" could be the maker's mark or initials, while "Hallmark H100" may indicate the specific design or collection of the silver item. To determine the exact meaning, further research into silver hallmark databases or historical records specific to silversmiths would be necessary.
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.
Electroplated
It is French importation hallmark. It means that your object has been imported into France.
That would be the hallmark, which is usually the initials of the designer. i.e: "ALE" on Pandora bracelets stand for the founder of Pandora jewelery.
worldwide
"SPC" Stands for Silver Plated Copper.
It means 100% silver