On the October 19th episode of Gossip Girl, “Enough About Eve”, Jessica Szohr’s character, Vanessa Abrams, wears a stunning necklace from famed jewelry designer Siman Tu.

Siman Tu started his luxury jewelry line in 1989 and has worked with designers such as Nina Ricci, Carolina Herrera, and Vera Wang. His pieces have been worn by celebrities Anne Hathaway, Kim Cattrall, and Mary J. Blige.

Tu’s jewelry is becoming a Gossip Girl staple, Lily also wore a pair of his Chandelier Earrings in the October 12th episode.

The Aqua Glass Necklace (pictured) worn by Jessica Szohr retails for  $620, shop Vivre.