Understanding 'C1' on Your 10K Gold Opal Ring: Meaning & Value

Question
I have a very beautiful opal ring.It came from an estate sale.On the in side of band it has C1 over 10k .What doe's C1 mean ? Could you please help me?? Thank You

Answer
Thank you for your inquiry. It sounds like you have a lovely ring. The 10K means that it is 10K gold and the C1 is probably a manufacturer code referring to the design or style. I could find no other designation for C1 as a hallmark. Sorry I couldn't provide any other information but if I locate anything else, I'll be sure to let you know.

Sally
jarrettsjade.com