A short history
Patented by the Asscher brothers of Amsterdam in 1902, the cut chosen for pieces of the Cullinan. A square step cut with a hall of mirrors down its center.
DIAMOND SHAPE
Asscher
A square emerald cut with deeper steps. Look straight down and you fall into a hall of mirrors.
- RATIO WE BUY
- 1.00 to 1.05
- FACETS
- 58
- BEST AT
- Deco settings, clean stones
Works with an asscher stone
PRICES AS OF 16 AUG 2026How it wears
Like the emerald cut it hides nothing, so clarity matters. The windmill pattern under the table is the signature; look straight down and fall in.
The setting it wants
Four corner prongs in a deco mount. It is the most architectural shape we sell and wants a setting that admits it.
What ratio should a asscher diamond be?
We buy 1.00 to 1.05. Outside that window the shape starts reading as a different cut, or worse, as a mistake. The passport lists exact millimeter dimensions so you can check our judgment.
How many facets does a asscher cut have?
58. More facets mean more sparkle but smaller flashes; fewer mean bolder, slower light. Neither is better; they are different personalities.
Is asscher more expensive per carat?
Fancy shapes like this cost less per carat than rounds, because less rough is lost and fewer buyers compete for them. Same material, better math.
Natural or lab grown in this shape?
Both, cut to the same standard. Lab rough makes larger asscher stones attainable; the passport names the origin either way, in the same type size as everything else.
OTHER SHAPES