Handcrafted in New York from certified 18K recycled yellow gold, the Jumbo Delta Studs feature EREDE’s signature corrugated texture. Available with either reclaimed natural diamonds or lab-grown diamonds, these studs offer a blend of sustainability and elegance. Brushed Delta Studs | Reclaimed Natural Diamonds: Featuring a total of 2 carats of reclaimed old mine cut natural diamonds. Brushed Delta Studs | Lab-grown Diamonds: Featuring a total of 2.01 carats of cultured VVS, CVD lab-grown diamonds.