Hi there! Seeing if anyone can help me understand this ring?! It looks like a fake.. has the markings of the " fake ones" but I have had it tested twice now by trusted jewlers and both times In front of me it has come up as 18 kt! Not gold plated but solid 18 kt gold! I'm super confused as the stone read one time as c.z but the ring is reading as 18kt! Has anyone heard of a "fake" cartier ring that was made from 18 kt gold?! I snapped a picture today of it being tested to show what it comes up as.