Designed by Louis Cartier in 1924, the Trinity ring is a signature design of the Cartier Maison.... Designed by Louis Cartier in 1924, the Trinity ring is a signature design of the Cartier Maison. The three interlaced bands in pink, yellow and white gold symbolize love, fidelity and friendship. The ring has inspired the full Trinity collection, a timeless testament to life's most memorable loves. Product Description: Trinity necklace Small model 18K white gold (750/1000) 18K rose gold…