18ct Yellow Gold 0.21ct Round Brilliant Cut Diamond Half Eternity RingThis 18ct yellow gold half eternity ring features eleven round brilliant cut diamonds totalling 0. 21ct, set into alternating round and marquise shaped panels. The marquise panels consist of two pav set diamonds to fill the space, whilst a single and slightly larger diamond sits inside the round panels. Our alternating eternity rings are becoming increasingly popular and great for those that want a little bit of everything in their jewellery design.