Princess diamonds are quickly catching up to rounds as one of the more popular diamond shapes. Princess stones arc a more modern look, but can be paired with solitaire or vintage bands for a new take on a traditional ring. Of all the square-shaped diamonds, the faceting of princess stones comes the closest to producing the brilliance and sparkle of a round diamond.
Princess stones arc slightly less expensive per carat than round stones since they can be cut with less rough diamond waste than their round counterparts. In addition, because of their larger corner-to-corner measurements, princess stones often look larger than a round or cushion stone of the same carat weight.
Princess stones range in length to width ratio from a perfect 1.00 to over 1.08, at which point a princess stone will no longer look square. They arc characterized by pointed corners, which should be protected by prongs when set.
The following tables provide additional guidance for understanding the cut, color, and clarity of princess stones.
PRINCESS DIAMOND CUT GUIDE
| EXCELLENT | VERY GOOD | GOOD | FAIR / POOR | |
| Table % | 61 - 71 | 58 - 60 or 72 - 74 |
56 - 57 or 72 - 82 |
< 56 or 82 > |
| Depth % | 63 - 75 | 58 - 62.9 or 75.1 - 80 |
< 57.9 or 80.1 > |
|
| Length / Width Ratio | 1.00 - 1.03 | 1.04 - 1.05 | > 1.06 | |
| 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 a princess diamond will impact the sparkle and size appearance of the stone.
Our gemologist recommends that clients not compromise on the cut and purchase a stone with an Excellent, or Very Good cut
PRINCESS DIAMOND CLARITY GUIDE
| EXCELLENT | VERY GOOD | GOOD (Eye Clean) |
FAIR / POOR (Not Eye Clean) |
|
| < .50 Carats | FL - VS2 | SI 1 | SI 2 | > I1 |
| .51 - 1.20 Carats | FL - VS 2 | SI 1 | SI 2 | > I1 |
| 1.21 - 2.00 Carats | FL - VVS 2 | VS1 - SI 1 | SI 2 | > I1 |
| > 2.00 Carats | FL - VVS 2 | VS1 - SI 1 | SI 1 | SI 2 |
OUR GIA GEMOLOGIST RECOMMENDS
Princess diamonds are less forgiving of small clarity flaws. A diamond that is a lower clarity, but still 100% eye-clean, represents the best value.
Our gemologist recommends that clients purchase a stone with VS 2- SI 2 clarity. The inclusions in these stones will only be visible under magnification.
PRINCESS 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 | J | > J |
| 1.21 - 2.00 Carats | D - F | G - H | I | > I |
| > 2.00 Carats | D - F | G - H | I | > I |
OUR GIA GEMOLOGIST RECOMMENDS
Princess diamonds show less visible color than many other shapes. A diamond that is a lower color, but still appears white, represents the best value.
Our gemologist recommends that clients purchase a stone with H -1 color. The color in these stones will be difficult to detect with an untrained eye.
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