18 Karat Rose Gold Diamond Ring This unique ring featuring a pyramid gemstone and diamonds with channel setting is crafted from 18K white, rose or yellow gold. Select the gemstone of your choice to draw out your inner radiance of strength which is a signature of the Cleo by Marli collection. 2 Link is a part of the Cleo by Marli collection drawing inspiration from Cleopatra evoking her strength and power into your own.