A yellow gold choker also played with the theme by using a 7.9-carat hexagon-shape emerald framed by a double band of pavé diamonds, and set on a gold chain ($20,350).

(If Milk’s name rings a bell at ... but the most common version is composed of six stripes, with the colors red, orange, yellow ... watermelon tourmaline linear bar ring. $2,590. 1STDIBS. Type ...

Opal and tourmaline give October birthstones a full rainbow of colors to choose from. ... Temple St. Clair Dreamcatcher 18K Yellow Gold, Ruby & Pink Tourmaline Ring. $4,900 at Saks Fifth Avenue.