18k gold .
15 cm with extender
Warranty : if this material leave a rust, you can change to new/ repair within 3month after purchases.
Clover Care :
Clover is tarnish free/water resistant/hypoallergenic suitable for daily use
note : Fine chain jewelry need to be extra care.Take off when bed if needed.To prevent any damages to the jewelry, a smart idea would be to remove your jewelrybefore going to sleep. As one sleeps, chains can twist, kink, and bend in the wrong direction. This would weaken some parts of the chain or pendant. It is possible for the chain to stretch over time and at some point, it will break.