Ruby and diamond are both cardinal gemstones and, when paired, this scintillating color combination creates an exquisite piece. Rubies are most precious when they exude a deep-red hue.
Jacob & Co earrings in platinum with 51.91 carats ruby and 22 carats diamond, price on request, Jacob & Co in New York, +1 212 719 5887, jacobandco.com
Graff necklace in 18K white gold with 151.15 carats ruby and 35.18 carats diamond, price on request, Graff in New York, +1 212 421 3605, graff.com
David Morris ring in 18K white and rose gold with 16.59 carats ruby and 2.8 carats diamond, price on request, David Morris in London, +44 20 7499 2200, davidmorris.com
Cartier Magnitude High Jewelry earrings in 18K white gold with 22.58 carats ruby and 3.26 carats diamond, price on request, Cartier in New York, +1 212 446 3400, cartier.com
Van Cleef & Arpels Filtro d’Amore ring in 18K white gold with 7.88 carats ruby and 1.67 carats diamond, price on request, Van Cleef & Arpels in New York, +1 212 896 9284, vancleefarpels.com
Bayco bracelet in platinum with 45.36 carats ruby and 3.82 carats diamond, $200,000, Bergdorf Goodman in New York, +1 888 774 2424, bayco.com