Demand for diamond jewelry is constant—but it’s time to update your shopping list. In fact, you might even consider tossing those tennis bracelets into the vault. Here are the staples you should be stocking up on instead. Plenty of retailers rely on the timeless appeal of round studs, tennis bracelets, and other diamond jewelry basics. But while readily available, they’ve become too vanilla to entice today’s millennial and Gen Z customers. “The younger generation prefers to spend their budget on a few pieces for layering and not blow it all on a single piece like a high-carat-weight tennis bracelet,” says Nan Lung Palmer, owner and managing director of Facets, a Denver-based jewelry sales and marketing consultancy. Jewelry industry veteran and former JCK editor Peggy Jo Donahue has witnessed a version of this cultural shift before. “I distinctly remember the days when Ju