The step cut facets and large table of emerald cut diamonds produce broader, more dramatic flashes of light. The emerald cut diamond is truly a classic, and is a center stone shape that is more unique than rounds, princess, or cushion stones.
As a result of their open appearance, emerald cut diamonds tend to show more color and clarity flaws than brilliant cut stones. Therefore, HYSTR recommends choosing an emerald stone that is at least one color and two clarities better than a corresponding round diamond. Because emerald stones are less popular than round, princess, and cushion stones, they often cost lower per carat than these shapes.
Emerald stones vary in length-to-width ratio from square (commonly referred to as Square Emerald Cut) to rectangular. HYSTR recommends that buyers consider their ideal length-to-width ratio as this ratio will impact the appearance of the diamond.
The following tables provide additional guidance for understanding the cut, color, and clarity of emerald stones.
EMERALD DIAMOND CUT GUIDE
| EXCELLENT | VERY GOOD | GOOD | FAIR / POOR | |
| Table % | 60 - 68 | 57 - 59.9 or 68.1 - 72 |
53 - 56.9 or 72.1 - 75 |
< 52.9 or > 75.1 |
| Depth % | 60 - 67 | 58 - 59.9 or 67.1 - 71 |
53 - 57.9 or 71.1 - 75 |
< 52.9 or > 75.1 |
| Girdle | Very Thin - Slightly Thick | Very Thin to Thick | Very Thin to Very Thick or Ex. Thin to Ex. Thick | |
| Culet | None | Very Small | Small | > Medium |
OUR GIA GEMOLOGIST RECOMMENDS
The cut of an emerald diamond will impact the sparkle and size appearance of the stone.
Most diamond grading labs do not provide cut ratings, so use this table as a reference to determine how your stone will sparkle.
EMERALD DIAMOND CLARITY GUIDE
| EXCELLENT | VERY GOOD | GOOD (Eye Clean) |
FAIR / POOR (Not Eye Clean) |
|
| < .50 Carats | FL - VS2 | VS2 - SI1 | SI2 | > I1 |
| .51 - 1.20 Carats | FL - VS1 | VS2 - SI1 | SI1 | > SI2 |
| 1.21 - 2.00 Carats | FL - VS1 | VS2 - SI1 | SI1 | > SI2 |
| > 2.00 Carats | FL - VVS2 | VS1 - VS2 | VS2 | > SI1 |
OUR GIA GEMOLOGIST RECOMMENDS
Emerald diamonds are less forgiving of small clarity flaws. A diamond that is a mid-range clarity, but still 100% eye-clean, represents the best value.
Our gemologist recommends that clients purchase a stone with VS1-SI1 clarity. The inclusions in these stones will only be visible under magnification.
EMERALD DIAMOND COLOR GUIDE
| EXCELLENT | VERY GOOD | GOOD (Looks White) |
FAIR / POOR (Color is Eye-Visible) |
|
| < .50 Carats | D - G | H - I | J | > J |
| .51 - 1.20 Carats | D - G | H | I | > I |
| 1.21 - 2.00 Carats | D - G | H | I | > I |
| > 2.00 Carats | D - F | G - H | I | > I |
| Fluorescence | None - Faint | Medium | Strong to Very Strong | |
OUR GIA GEMOLOGIST RECOMMENDS
Emerald diamonds show more visible color than many other shapes. A diamond that is a mid-range color, but still appears white, represents the best value.
Our gemologist recommends that clients purchase a stone with G - H color. The color in these stones will be difficult to detect with an untrained eye.
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