Radiant melee is chosen by length and width and weighed by the carat. This chart translates between the two in rectangular and square outlines, so you can plan a band, a channel or a halo before you order. Every size is calibrated to ±0.15mm and sorted by hand under the loupe.
How many stones, how much weight.
Pick an outline and a size, then enter a stone count or a total carat weight. The other fills in.
Estimates only. Actual weight is confirmed on the scale.
Each row is a calibrated size, length by width. The shape beside it is drawn to scale against the others. Switch outline to see its sizes, then select any row to load it into the estimator.
| Scale | Size (L x W)Size | Ratio | Approx. ct / stoneCt each | Approx. stones / ctPer ct |
|---|---|---|---|---|
| 3.00×2.00mm | 1.50 | 0.08 ct | 12.5 | |
| 3.30×2.20mm | 1.50 | 0.10 ct | 10.0 | |
| 3.80×2.60mm | 1.46 | 0.15 ct | 6.7 | |
| 3.80×3.00mm | 1.27 | 0.20 ct | 5.0 | |
| 4.00×2.80mm | 1.43 | 0.18 ct | 5.6 | |
| 4.00×3.00mm | 1.33 | 0.21 ct | 4.8 | |
| 4.15×2.90mm | 1.43 | 0.20 ct | 5.0 | |
| 4.50×3.20mm | 1.41 | 0.30 ct | 3.3 | |
| 4.70×3.30mm | 1.42 | 0.30 ct | 3.3 | |
| 5.00×3.00mm | 1.67 | 0.30 ct | 3.3 | |
| 5.00×3.50mm | 1.43 | 0.35 ct | 2.9 | |
| 5.30×3.70mm | 1.43 | 0.40 ct | 2.5 | |
| 5.50×3.80mm | 1.45 | 0.45 ct | 2.2 | |
| 5.70×3.90mm | 1.46 | 0.50 ct | 2.0 | |
| 6.00×4.00mm | 1.50 | 0.57 ct | 1.8 | |
| 6.00×4.20mm | 1.43 | 0.60 ct | 1.7 | |
| 6.20×4.50mm | 1.38 | 0.75 ct | 1.3 | |
| 7.00×5.00mm | 1.40 | 1.00 ct | 1.0 | |
| 3.80×3.80mm | 1.00 | 0.30 ct | 3.3 | |
| 4.20×4.20mm | 1.00 | 0.40 ct | 2.5 | |
| 4.50×4.50mm | 1.00 | 0.50 ct | 2.0 |
*Counts are approximate, based on standard calibrated radiant cut melee, and vary with depth, corner size and dimensions within the ±0.15mm tolerance. Ratio is length divided by width. Scale shapes show relative size, not actual size on screen.
Length and width are the spec
Seats are cut to both dimensions. Ratio, length divided by width, sets the outline: most rectangular sizes here sit near 1.40, and square sits at 1.00. Order to the length and width your setter or CAD calls for, then use the weight column to plan the budget.
Step outline, brilliant face
A radiant shares the cut-corner outline of an emerald cut, but it is faceted like a brilliant. The face breaks into many small reflections rather than long steps, so it reads brighter and busier than an emerald cut of the same size.
Weight follows the depth
Depth and corner size both move the weight, so two radiants of the same length and width can weigh differently. Counts here assume standard proportions. Every stone is a natural diamond, screened for natural origin before it ships.
How melee is sold
Retail orders are sold per the piece price shown. Trade orders are invoiced by the carat on the actual weight of your parcel, and we contact you first if the total differs from the estimate by more than 10%. Melee is final sale and not available on trade memo.
Rectangular and square radiant cut melee, sorted by hand and screened for natural origin before it ships.
