Made by world gold and diamonds jewelry manf.
If jewelry is marked 10k only, It means it's 10karet gold. If it say 10k ge or hge, it means it is gold plated.
I don't know about the J, but the S.A.L. could be one of the early Swarovski signatures.
24k is pure gold, 18k is 75% pure gold, 14k is 58.5% pure, and 10k is 41.7% pure
When you have a piece of 10k jewelry that has 'OTC' on it, it is the name of the company. OTC has been a leader in the fine jewelry industry for many years.
10K yes it is gold. IBG= Ira B Goodman jewelry maker (makers mark)
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Jewelry of this fineness is marked “14k” of 585,” the European designation meaning 58.5% gold. Nothing less than 10-karat gold can be legally marked or sold as gold jewelry in the United States. These pieces are marked “10k” or “417,” the European designation meaning 41.7% gold.
NBK is the manufacturers branding on the jewelry. 10k is the quality of the gold.
416 is 10k
This means 10k gold.
The 10k of 10K THL means the metal is 10 karats. The THL is the trademark of Samuel Aaron, Inc., who is a jewelry designer.