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Sterling.
plated sterling silver
Sterling silver jewelry and silverware is not alwaysmarked "925". Both silver jewelry and sterlingware can also be marked "Ster", "STER", or "Sterling". Silver jewelry may also be stamped "MEXICO". Sometimes this stamp accompanies another sterling marking; sometimes it is the only marking.You can learn more about other silver markings and gold markings at the link below.
I think you are referring to .925.Sterling silver is an alloy of silver containing 92.5% by mass of silver and 7.5% by mass of other metals, usually copper. Sterling silver is most often used for jewelry because of its combination of attractiveness and durability. Acceptable quality marks for sterling silver include: sterling, ster and .925.
SS stamped on jewelry means Sterling Silver. Some other common stamps for Sterling Silver are "925" "S/S" "ster" "sterling" and "sterling silver" SP stamped means "Silver Plated" - No Real Value because it is only a coating that is put over a less valuable metal such as Brass or Copper.GP stamped means "Gold Plated" (same as above)Common stamps found on Gold are 10k, 14k and 18k (they could also be stamped with a three digit number: 416 (same as 10k), 585 (same as 14k) and 750 (same as 18k)
sterlng silver
STER is short for STERLING, which is 92.5 silver.
Sterling
I Believe It would be the ring being sterling silver with 10k black hills gold.
In newer designs Ive seen where Ster/10K indicates that the ring is sterling silver, plated with 10K gold. In older designs, the 2 stamps usually mean that part of the ring is sterling and part of the ring is 10K gold.
I have a nickel silver chain that was sold as sterling silver in 1991 (it is stamped "ster"). However it is turning a bluish color. Sterling silver first turns a yellowish color and then goes black. I think a number of my recently purchased "ster" or "925" chains are actually nickel silver, which doesn't contain any silver at all (60% copper, 20% nickel, 20% zinc according to wickipedia). I am horrified at the widespread metal fraud that has been and is being committed. Check out "aluminum bronze", especially all of the images, to protect yourself against yellow gold fraud.
sterlized