Discover the Jewels by Grace 1.16 ct. Old European Cut Diamond Collet Studs, a classic addition to elevated ear stacks. Crafted in 18K yellow gold, these gorgeous studs feature 1.16 cts. of old European-cut diamonds, made popular in the late 19th and early 20th centuries. Part of the Jewels by Grace Collection, featuring extraordinary pieces sourced from around the globe.