Solid 14Kt Gold Natural Black Onyx Size: 4mm, 0.50 Carats 5mm, 1 Carats 6mm, 2 Carats 8mm, 4 Carats Comes with pushbacks Comes in jewelry box Matching Pendant, Bracelets and Ring This is the perfect gift for mom, wife, fiancee, girlfriend, valentine, daughter, family or friend. It is a special gift for mother's day, valentine's day, wedding, anniversary, birthday, Christmas, Easter, New Year's and any holiday.