At Bottega Veneta, Baroque pearls in a shade of jade green punctuated looks on the runway. At Saint Laurent, too, colorful jewelry made a statement, including molten earrings with ruby and emerald ...

It was the protection. “There are heirlooms and then there’s jade,” said the jewelry designer Bliss Lau, who created this black jade bracelet after giving birth to her daughter, Soa, in 2018.