Description Lab Grown Heart Shape Cut Diamond Halo Engagement Ring. Lab Grown Heart Shaped Diamond Claw Set With Round Brilliant Cut Diamond Halo. Crafted In 18ct Rose Gold , Diamonds Set In 18ct White Gold. Diamond Carat Weight: 0.50ct Diamond Quality: E VS IGI Certificated Total Carat Weight: 0.75ct Also Available In 18ct Yellow, White Gold & Platinum