For the most part unless you got a XRF you can't be totally sure, I got a sigma metalytics verifier it's not really meant for jewelry but it sometimes works and recently got the Kee gold tester it seems ok and was not too expensive will slowly start buying jewelry for spot from private sellers and testing with XRF at some shop to insure I don't get reckt too hard
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Yeah, the Sigma is even iffy on jewelry. I got my Sterling bracelet to register as 90% gold just by holding it closely to the small wand sensor. 😆
I got some experience with that, clad Kennedy half's pass the gold test 🤣
Of course they do 🤦♂️