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The nacre base, chosen for its gray tone and natural violet and green iridescence, is paired with a 0.2mm-thin aventurine layer, creating a dial just 0.4mm thick.—Anthony Demarco, Forbes.com, 29 Apr. 2026 But where limestone is crumbly and opaque, nacre’s toughness and light-bending properties come from silklike proteins that weave among the layers, holding them in place while providing enough elasticity to absorb the shock of a fracture.—Caitlin Kennedy, Scientific American, 25 Apr. 2026 Private is the mystery incandescence of her nacre, coveting which the likes of us killed her ancestors to make buttons, souvenirs, entire garments for ritual dancers who sought to banish their demons with her magical inner light.—Literary Hub, 23 Feb. 2026 And some jewelers like ammolite, a rare rainbow-hue nacre that formed during the fossilization of some ammonite shells in what is now the Canadian province of Alberta.—Chantel Tattoli, New York Times, 20 May 2025 They are cultivated over 18 months and are selected by hand for optimal nacre thickness and exceptional luster.—Paige Reddinger, Robb Report, 28 Jan. 2025
Word History
Etymology
French, from Middle French, from Old Italian naccara drum, nacre, from Arabic naqqāra drum