This bracelet is made of 18k yellow gold and weighs 4 grams. The bracelet is a coil link design. It stretches open and closes automatically. The bracelet has a diamond halo setting on the top center. It is holding a 4.5 mm round blue topaz. There are sixteen natural mined diamonds having a total weight of .16cts. The halo is attached to the top of bracelet and it moves back and forth.