BORUO925 Sterling Silver Ring Triple Interlocked Rolling High Polish Ring Size 4-12

How accurate is their sizing? Should i go up a half size for thr stacking?

I purchased one of these two years ago, and it just started to give me a rash. Can anyone confirm these are not just coated in silver?

does this make your finger turn green?

Are you sure this is sterling silver ? i bought one and it doesn’t look like ss also i bought my granddaughter 1 & after 2 days of wearing it her