A short history
Invented in 1977 to put brilliant fire inside an emerald cut outline. The engineer’s answer to wanting both.
DIAMOND SHAPE
Radiant
Emerald outline, brilliant engine. Cropped corners for a stone that survives daily wear, with the fire of a round.
- RATIO WE BUY
- 1.00 to 1.35
- FACETS
- 70
- BEST AT
- Fire plus a durable outline
Works with a radiant stone
PRICES AS OF 16 AUG 2026How it wears
Cropped corners make it the most durable rectangular shape, and its crushed-ice sparkle hides inclusions well. A working-hands shape that still performs.
The setting it wants
Four corner prongs. It pairs naturally with tapered baguettes, and reads modern in a bezel.
What ratio should a radiant diamond be?
We buy 1.00 to 1.35. 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 radiant cut have?
70. More facets mean more sparkle but smaller flashes; fewer mean bolder, slower light. Neither is better; they are different personalities.
Is radiant 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 radiant stones attainable; the passport names the origin either way, in the same type size as everything else.
OTHER SHAPES