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.
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)
24k is pure gold, 18k is 75% pure gold, 14k is 58.5% pure, and 10k is 41.7% pure
B 10k on jewelry typically indicates that the piece is made of 10-karat gold, which means it contains 41.7% pure gold mixed with other metals for durability. The "B" may refer to a brand or manufacturer's mark. Jewelry marked with 10k is often more affordable than higher karat gold, making it a popular choice for everyday wear.
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.
416 is 10k
Real jewelry
This means 10k gold.
"10k China" typically refers to a piece of jewelry made in China that is stamped with "10k," which indicates that the item is made of 10 karat gold. The "China" stamp simply indicates the country of origin where the jewelry was manufactured.