Louis Cartier, the founder's grandson, introduced the Trinity ring in 1924. The ring is characterised by its three-band construction, intertwined to create an eternity effect. The collection has since expanded to include necklaces, bracelets and earrings. Retails for 710 USD. In excellent condition. Cartier Size 5.75. Comes with Box;Certificate of Authenticity;Original Receipt; (Out of stock)