Citrine and Smokey Quartz Stacking Ring SetThe Citrine and Smokey Quartz Stacking Rings are available separately. Set in 9ct Yellow Gold they stack together to create a bold design, while the mix of warm tones complement each other beautifully. Triple Bands: This ring features three separate rings made from 9ct yellow gold, each measuring 2. 5mm in width. Citrine and Smokey Quartz Centrepiece: The centrepiece of this ring is a 10x6mm rectangular citrine and a 9mm round smokey Quartz. they are