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375 means the ring is 9 carat gold & GM 16 may mean the ring weighs 16grams

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11y ago
This answer is:
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David Jones (kerbsid...

Lvl 1
3w ago
Doesn't not mean weight, it means the size of the ring-hole being 16 millimeters. Use a metric ruler to measure it!?

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Q: What does 375 then GM 16 stamped on a ring mean?
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