Treated rainbow aura kyanite ==silver ring==size 9

Item ==is one of a kind==handmade Condition New with tags: A brand-new, unused, and unworn Brand XTREMEGEMS Main Stone Rainbow Aura Kyanite Metal Sterling Silver Metal Purity 925 parts per 1000 Ring ===can be resized easily ==I didn’t see 925 stamp but the seller assure me it silver==it isn’t magnetic 9 Weight (grams) 6.3