Overview A square Asscher cut diamond, deep and hypnotic, held in a deliberately simple setting that lets its geometry take centre stage. Symmetry, depth and quiet Art Deco glamour. Choose 9ct or 18ct white, yellow or rose gold, or platinum, and a diamond of 0.50ct to 2.00ct: natural, from H SI1 to F VS1, or lab grown in E VS1 or D VVS2. Or begin with the setting alone, and let us find the diamond it deserves. Each ring is crafted to order and hallmarked at the London Assay Office. What Our Experts Say A fine Asscher has a high crown and a modest table, so that looking into it you see a series of receding squares, often likened to a windmill. That depth is what gives the cut its hypnotic quality, and it is easily lost in a shallow stone, so every Asscher deserves to be judged by eye. Not sure of your ring size? See our ring size guide.