Get some glamour shots of that rock ?. Late Christmas present I got was something called a moon rock. Fish tank decoration. Skeptical if it is safe, but I’ll try it. Says it is safe, but u never know
When you said "rock" I thought for a minute, oh here we go, someone's showing off with an extremely expensive piece of jewellery with a whopping big diamond in it or something, lol. But you weren't kidding......it's just a plain old rock!!! Someone's a cheap skate in your house, lol.