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Round|Lab Grown|IGI

2.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1

Diamond specifications and retailer prices

From $1,963 USD
CA$2,726 CAD
As of November 2, 2026
3 retailers carry this diamond
Most expensive: $1,963 USD at Diamond Exchange Canada
View at Diamond Exchange Canada

About this 2.51ct lab-grown round diamond

This 2.51ct lab-grown round sits in the two to three carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 3 retailers as of November 2, 2026. 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

2.51
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions8.76 × 8.71 × 5.32 mm
L/W Ratio1.01
Top View
8.76 mm8.71 mm2.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 58.0%CrownGirdle: MediumPavilionCulet: NoneDepth 60.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: $1,963 USD|Low: $316 USD|High: $1,963 USD|Avg: $799 USD
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 15, 2026
Retailer 4$334 USD
Retailer 7$388 USD
Retailer 3$415 USD
Retailer 8$415 USD
Retailer 6$561 USD
Retailer 2$761 USD
Retailer 5$1,471 USD
Diamond Exchange Canada$1,963 USD

27 data points across 8 retailers

3 retailers

Retailer 1
-
$388 USD
Price last confirmed 20 days ago
Retailer 2
-
$403 USD
View
Price last confirmed 48 days ago
Most Expensive
B
Diamond Exchange Canada
1986528336 · Nov 2
$1,963 USD
CA$2,726 CAD
View
2 more retailers have this diamond

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
2.51ct Round
$1,963 USD