Stolen Ring in Girls bathroom

Would you steal something if you say it simply laying somewhere? If you did, would you feel guilty, or upset? WELL I HOPE YOU WOULD! Yesterday during 7th period approximately @ 1:30 p.m I was in the girls bathroom in my school. I have a Swarovski crystal ring and i took it off of my finger to wash my hands because you are not supposed to wash your hands with the rings on because the water loosens up the glue that holds the crystals together and they will fall out. I was doing my thing, then walked out of the bathroom and left it on the sink. I walked into my class, sat down, realized it was not on my finger, then RAN to the bathroom. Within 3 minutes, it was gone. I hope this person feels extremely guilty and KARMA WILL GET YOU! Some girls do NOT rule after all.