Fully saturated, opaque, and outside conventional grading- there is no clarity scale for a stone light does not pass through. What a black diamond offers instead is surface: a hard graphite luster closer to metal than to gem, and an outline that stays sharp against any setting.

The most engineered cut in the trade, fifty-seven facets arranged to return as much light as the rough allows. Optimized over a century for maximum brilliance, which is why so much of what is sold today looks alike. We select for the ones that do not: proportions cut for the stone rather than for yield.