My family heirloom. My great great great great grandmother (a muggle, on my moms side) was a nurse in WW1 where she met my great great great great grandfather (a wizard). This was her necklace and it has been passed down from girl to girl on my moms side. My mom is a healer at St. Mungo' sand my dad was an auror (he was killed by death eaters). My dad was in gryffindor, mom was in Ravenclaw. I have a sister in 3rd year whose in Ravenclaw.