It can be hard having your birthday in December - but this year make sure there's an extra special birthday treat under the tree for you! Our 9ct yellow gold stud earrings feature a 3mm round tanzanite crystal in a 6 prong claw setting, the birthstone for the month of December. Weighing a tiny 0.25 grams, you'll barely feel them. Available in all the different birthstones, why not buy a pair for your bestie or your sister. Twinning is winning this year!