The shape library
Emerald
Open facets. Quiet depth.
Step cut
Emerald
Open facets. Quiet depth.
A rectangular outline with clipped corners and broad parallel facets creates alternating planes of light. Its open appearance is quite different from brilliant-style scintillation.
View emerald size chart A closer look at emeraldIllustrative faceted models, shown under consistent lighting. Actual stones, facet patterns and proportions vary.
A sense of scale
Emerald
size chart.
All sizes, in two parts. Select any weight below to compare its approximate millimetre size.
These rectangular examples show the outline from above, excluding depth.
Understand carat and the 4Cs01 Small stones
0.02–0.20 ct
| Carat weight (ct) | Length × width (mm, approx.) |
|---|---|
| 1.8×1.2 † | |
| 2×1.3 † | |
| 2.2×1.5 † | |
| 2.4×1.6 † | |
| 2.5×1.7 † | |
| 2.7×1.8 † | |
| 2.8×1.9 † | |
| 2.9×1.9 † | |
| 3×2 | |
| 3.2×2.2 † | |
| 3.5×2.5 | |
| 3.9×2.9 † | |
| 4.1×3.1 † |
02 Larger stones
0.25–5.00 ct
| Carat weight (ct) | Length × width (mm, approx.) |
|---|---|
| 4.5×3.5 | |
| 5.5×4.5 | |
| 6×4 | |
| 7×5 | |
| 8×6 | |
| 8.5×6 | |
| 10×8 | |
| 11×9 | |
| 12×10 |
† Calculated estimate from nearby published sizes. Below the smallest reference, dimensions are scaled assuming unchanged proportions. These entries describe an illustrative size, not a measured stone.
Educational estimates. Carat measures weight: 1 ct = 0.2 g. Depth, girdle and proportions affect dimensions, so there is no exact mm-to-carat conversion. Check the individual stone’s measurements and grading report.
References: Diamond Source of Virginia size chartGIA carat education
Character & construction
Open facets. Quiet depth.
A rectangular outline with clipped corners and broad parallel facets creates alternating planes of light. Its open appearance is quite different from brilliant-style scintillation.
What to consider
The large table makes careful inspection of clarity and colour useful. Compare length-to-width ratios and avoid judging light performance from a single photograph.
Ask for the actual measurements, report and images of the stone being offered. A shape illustration cannot establish its appearance, grading or availability.
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