Make her birthday extra special this year with these birthstone stud earrings. Made from sterling silver, they feature a tanzanite CZ crystal triangle which is the birthstone for December. Whether they're a gift for her birthday or a festive stocking filler, they're guaranteed to put a smile on her face at this special time of year. These studs measure 0.6 x 0.7 x 0.3cm and weigh just 1.3 grams - making them comfortable enough to wear throughout the whole festive period.