Apparel & Accessories > Jewelry > Rings Jewelry > Rings in stock Jennifer Meyer Blue Sapphire Thin Ring in Yellow Gold/Sapphire, Size 6.5: Sleek and minimal, this 18-karat yellow-gold band is detailed with a radiant blue sapphire. It’s beautiful on its own, though its scale makes it perfect for stacking with other rings (like the Ruby Thin Ring ).18kt yellow gold, blue sapphire Made in USA.