True colors: The legacy, luminosity and lore behind four gorgeous gemstones

Symbolism: Nobility, truth, sincerity, faithfulness and wisdomBirthstone month: September Legend: Ancient Greeks and Romans believed that the precious blue stones had the power to protect them from envy and harm.Dazzling detail: A rare variety, the star sapphire displays starlike rays on its surface when cut as a cabochon and viewed under light.Icon: Princess Diana’s Garrard engagement ring, now worn by Kate Middleton, features a 12-carat oval Ceylon sapphire in a diamond halo setting.Clockwise from top left: London Collection ring in 18k white gold with diamonds, sapphire and lapis, $6,540; Etincelle de Cartier wedding band in platinum with diamonds and sapphires, $9,500; Bulgari Divas’ Dream Mosaica High Jewelry watch in 18k white gold with diamonds and sapphires, price upon request; Roberto Coin Obelisco bangle in 18k white gold with diamonds and sapphires, $23,500All available at London Jewelers, 2046 Northern Blvd., Manhasset, LI; Cartier at Cartier, 2100 Northern Blvd., Manhasset, LISymbolism: Renewal, balance, love and loyaltyBirthstone month: May Legend: Cleopatra decorated her palace with emeralds, gave them as gifts to visiting dignitaries and wore them to showcase her wealth and power. Dazzling detail: A cat’s eye emerald, usually found in Brazil and Colombia, displays “chatoyancy,” a band of light that dances across the dome-cut stone. Icon: The 18.04-carat Rockefeller Emerald, a flawless Colombian gem famed for its exceptional color and clarity and purchased by John D.Rockefeller Jr.
for his wife Abby in 1930, sold at auction in 2017 for more than $5.5 million.Clockwise from top left: London Collection necklace in 14k white gold with emerald and diamonds, $3,070; Cartier Destinée earrings in 18k white gold with diamonds and emeralds, price upon request; Bulgari Serpenti Misteriosi High Jewelry secret watch in 18k white gold with diamonds and emeralds, price upon request; London Collection ring in 18k white gold with diamonds and emerald...