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Cushion|Lab Grown|IGI

2.57ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • IGI LG720589563

Certificate IGI LG720589563

Diamond specifications and retailer prices

From $2,332 USD
As of October 27, 2026
1 retailer carries this diamond
Only listing: $2,332 USD at Blue Nile
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Blue Nile

About this 2.57ct lab-grown cushion diamond

This 2.57ct lab-grown cushion sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG720589563 or 720589563. Listed at a single retailer as of October 27, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.57
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG720589563
Dimensions9.53 × 7.14 × 4.74 mm
L/W Ratio1.33
Culet sizeNone
Top View
9.53 mm7.14 mm2.57 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG720589563
Side View
Table 63.0%Crown 37°Girdle: MED-STKPavilion 35.4°Culet: NoneDepth 66.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 27
Current: $2,332 USD|Low: $545 USD|High: $2,334 USD|Avg: $962 USD|-0.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 27, 2026
Retailer 4$545 USD
Retailer 7$617 USD
Retailer 2$752 USD
Retailer 3$767 USD
Retailer 5$842 USD
Retailer 6$879 USD
Blue Nile$2,332 USD

3 data points across 7 retailers

1 retailer

B
Blue Nile
27356739 · Oct 27
$2,332 USD
View

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
2.57ct Cushion
$2,332 USD