If you are positive the ring is gold, the 901 could refer to either the stock number of the jeweler or a rather unusual gold content measurement. The number 916 or 917 indicates 22-karat gold (91.6% gold). So, 901 could be 90.1% gold.
However, if you are not positive the ring is gold, this is likely to be the quality stamp to indicate the amount of platinum used in the band. "IridPlat" or ".90Plat/Ir" is used to show the band is 90% pure platinum.
It means it's 24K gold, pure.
gf means gold filled
it means that it contains 27.5% gold
it means your gold is of 22 carat purity
The 0750 means the watch is 18K Gold>
Stamps on Gold and Platinum Rings The stamp 555 on a ring is 14k Gold The stamp 999 means Gold with Platinum The Stamp 333 on a ring is very Rare and Exclusive, it has different value's - stamped as ; 333 means Platinum. (rear white Gold) stamped as ; 333 , 350 means, Platinum above 10000 years old. stamped as ; 333 , 360 means, Platinum above 20000 years old.
When gold is stamped with a "965," it means that it is 96.5% pure gold or 23K gold. This is the standard for gold in Thailand.
9k gold
No. That means that it is 92.5% sterling silver. It's not gold.
625 stamp means the item is 62.5 % gold, which = 15ct
A gold ring that is stamped with 10 K F means that the ring is 10 karats. The F means that the ring is considered fine jewelry.
it means its not gold.....I just tested one with that stamp