This is a gorgeous X-link bracelet from Tiffany & Co. by designer Jean Schlumberger

Jean Schlumberger’s visionary creations are among the world’s most iconic designs.
It is crafted from 18k yellow gold with a polished finish and features significant open grooved X links
Each link is joined together along the ends with a triangular shape links, which allows it to flex and fit comfortably around the hand.

Signed: Tiffany Schlumberger Studios 18kt
Material: 18k yellow gold
Measurements: 7.25″ long x 0.75″ wide
Weight: 46.1 grams