Learn more about the Astra Lab Emerald and Diamond Solitaire Cushion Cut Necklace in Silver. The deep green 1.70ct cushion cut emerald pendant sits proud on the neckline, highlighted by 0.08CT of H/SI quality circular diamonds that hang delicately above it, emitting beautiful sparkle. Simple but expertly crafted, this solitaire cushion cut necklace is an excellent gift. The unique combination of stones in the sterling silver chain makes for a beautiful occasion piece, but can equally be worn daily. And because all the stones featured are lab-grown, you can experience these beautiful jewels in a more sustainable and ethical way than ever before. Take advantage of free worldwide delivery, beautiful packaging and a 5-year guarantee.