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Cushion|Lab Grown|IGI

2.51ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG727547270

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG727547270

Diamond specifications and retailer prices

From $400 CAD
$286 USD
As of October 27, 2026
Save $2,735 CAD (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,135 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 2.51ct lab-grown cushion diamond

This 2.51ct lab-grown cushion sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG727547270 or 727547270. Listed at 16 retailers as of October 27, 2026, with prices from $400 to $3,135, a $2,735 spread on the same certified stone. Brilliant Earth lists it at $3,135. 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
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle32.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG727547270
Dimensions7.94 × 7.60 × 4.76 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.94 mm7.60 mm2.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG727547270
Side View
Table 61.0%Crown 35.6°Girdle: MED-STKPavilion 32.2°Culet: NoneDepth 62.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $3,135 CAD|Low: $400 CAD|High: $3,135 CAD|Avg: $1,169 CAD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 29, 2026
Retailer 7$400 CAD
Retailer 8$484 CAD
Retailer 14$558 CAD
Retailer 15$665 CAD
Retailer 2$700 CAD
Retailer 4$739 CAD
Retailer 10$840 CAD
Retailer 6$868 CAD
Retailer 12$872 CAD
Retailer 5$1,106 CAD
Retailer 3$1,124 CAD
Retailer 9$1,408 CAD
Retailer 11$1,779 CAD
Retailer 13$2,414 CAD
Brilliant Earth$3,135 CAD

42 data points across 15 retailers

16 retailers$400 CAD to $3,135 CAD

A
Cheapest Retailer
-
$400 CAD
$286 USD
Final sale: no returns
A
Retailer 2
-
$484 CAD
HK$2,700 HKD
View
Retailer 3
-
$558 CAD
£314 GBP
View
Price last confirmed 13 days ago
A
Retailer 4
-
$665 CAD
$475 USD
View
A
Retailer 5
-
$700 CAD
€476 EUR
View
B+
Retailer 6
-
$739 CAD
$528 USD
View
A
Retailer 7
-
$840 CAD
£473 GBP
View
A
Retailer 8
-
$868 CAD
$620 USD
View
A
Retailer 9
-
$872 CAD
A$958 AUD
View
B+
Retailer 10
-
$1,106 CAD
$790 USD
View
B+
Retailer 11
-
$1,124 CAD
$803 USD
View
B+
Retailer 12
-
$1,408 CAD
SGD 1,359 SGD
View
B+
Retailer 13
-
$1,779 CAD
£1,001 GBP
View
B
Retailer 14
-
$2,337 CAD
$1,670 USD
View
Retailer 15
-
$2,414 CAD
$1,725 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
16747996A · Oct 29
$3,135 CAD
$2,240 USD
View
15 more retailers have this diamond
Prices start from $400 CADSave up to $2,735 CAD

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.

A
2.51ct Cushion
$400 CAD