yesterday i was coming from a cafe with 2 of my friends(females),they decided to spend sometime with me...so i offered them some drinks and we talk for a while,so they decided to leave after 2 hours...to my suprise i didn't see the wrist watch(72 karat diamond) and it was in my shelf when they arrived,i feel very depressed now and i don't want to suspect anybody wrongly...but i know is either one of them that took it,what should i do?....pls i need ur opinion,no insult pls...God bless u.