Ruby Ring with 14 Karat Gold Plated Matte Finish Band - Size 6 worn by Blair Waldorf (Leighton Meester) in Season 3, Episode 4 “Dan de Fleurette”
Similar Match
“Blair is talking to Chuck. She is wearing a ruby ring with a gold band, paired with a plaid shirt dress. The item is similar to Blair's with a gold band and ruby stone.”