The Ashoka cut is named after the third-century BCE Indian emperor, and the name is not a marketing flourish. The original Ashoka diamond, owned by the William Goldberg company, is the namesake stone — a 41.37-carat colourless diamond with a rectangular outline and rounded corners. The cut was reverse-engineered from that one historical stone.
What distinguishes the Ashoka is the way it returns light. Sixty-two facets in a criss-cut weave produce something closer to a soft, sustained glow than the staccato flash of a brilliant. Where a round catches light and throws it back in discrete sparks, the Ashoka diffuses it. The stone appears to be illuminated from within rather than reflecting from without.
This makes it disproportionately effective in low or warm light. At a dinner table, in restaurant lighting, in the early evening — the Ashoka holds its presence. Under the harsh overhead fluorescents of a jewellery store, it can look quiet compared to a round brilliant. People who buy Ashokas tend to do so after seeing one in proper light, not under a jeweller's lamp.
The rectangular outline with rounded corners flatters the finger. Set in a low bezel or a four-prong setting, the cut elongates the hand while still reading as a substantial stone. It is not a discrete cut — its outline is unusual enough that most people will notice — but it is also not loud. The effect is closer to wearing a small sculpture than wearing a sparkle.
If your reference is the Asscher cut, the Ashoka is its softer, longer cousin. If your reference is the cushion, the Ashoka is the more rigorous geometry. It rewards the wearer who studies their own jewellery rather than the wearer who buys it to be seen.