held in a 4 prong claw setting, this aquamarine cz crystal is bright and vibrant, making it the perfect nose stud to bring a bit of brightness to your look. Not only for march birthdays, aqua is a gorgeous colour to wear in the summer months as well! the crystal is 1.5mm in size, whilst the stud itself is 7mm long and has a gauge measurement of 24ga. it weighs just 0.1g and is stamped with 925 for sterling silver.