I’m going to acid test it for silver, although I’m dubious of its quality. Seems pretty rare to find CZ stamped inside a cheap metal ring 💍🤷🏼♂️I believe the ‘SU’ mark is for a company that traded as “Silver Unlimited”. A number of ebay and Etsy sellers are (incorrectly) interpreting the ‘CZ’ letters as an indication the company was based in The Czech Republic. I agree the letters are for ‘Cubic Zirconia’ and my notes from previous research indicate that Silver Unlimited was a (now defunct) internet seller of costume jewellery and likely shipping direct to customers from China.
Thank you 🙏I believe the ‘SU’ mark is for a company that traded as “Silver Unlimited”. A number of ebay and Etsy sellers are (incorrectly) interpreting the ‘CZ’ letters as an indication the company was based in The Czech Republic. I agree the letters are for ‘Cubic Zirconia’ and my notes from previous research indicate that Silver Unlimited was a (now defunct) internet seller of costume jewellery and likely shipping direct to customers from China.
I’m going to acid test it for silver, although I’m dubious of its quality. Seems pretty rare to find CZ stamped inside a cheap metal ring 💍🤷🏼♂️

Nice!!! Congrats!!!Clearly CZ is Cubic Zarconia or whatever … but what does those other letters mean ?