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Cushion|Lab Grown|IGI

3.10ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG624442531

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG624442531

Diamond specifications and retailer prices

From $645 CAD
HK$3,600 HKD
As of October 30, 2026
Save $2,175 CAD (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,820 CAD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 3.1ct lab-grown cushion diamond

This 3.1ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG624442531 or 624442531. Listed at 9 retailers as of October 28, 2026, with prices from $645 to $2,820, a $2,175 spread on the same certified stone. Rare Carat lists it at $2,820. 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

3.10
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG624442531
Dimensions8.48 × 8.42 × 5.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.48 mm8.42 mm3.10 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG624442531
Side View
Table 64.0%Crown 35.4°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 67.0%

Caratlytics Score

How it works →
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 30
Current: $2,820 CAD|Low: $645 CAD|High: $5,723 CAD|Avg: $2,043 CAD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 9$645 CAD
Retailer 2$702 CAD
Retailer 6$784 CAD
Retailer 11$922 CAD
Retailer 8$1,019 CAD
Retailer 5$1,020 CAD
Retailer 12$1,371 CAD
Retailer 10$1,421 CAD
Retailer 7$2,302 CAD
Rare Carat$2,820 CAD
Retailer 4$5,109 CAD
Retailer 3$5,723 CAD

3 data points across 12 retailers

9 retailers$645 CAD to $2,820 CAD

A
Cheapest Retailer
-
$645 CAD
HK$3,600 HKD
A
Retailer 2
-
$702 CAD
£395 GBP
View
A
Retailer 3
-
$784 CAD
$560 USD
View
B+
Retailer 4
-
$922 CAD
$659 USD
View
A
Retailer 5
-
$1,019 CAD
$728 USD
View
A
Retailer 6
-
$1,020 CAD
£574 GBP
View
A
Retailer 7
-
$1,421 CAD
$1,015 USD
View
B
Retailer 8
-
$2,302 CAD
£1,295 GBP
View
Most Expensive
B
Rare Carat
KI5314425KF624 · Oct 28
$2,820 CAD
$2,015 USD
View
8 more retailers have this diamond
Prices start from $645 CADSave up to $2,175 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
3.10ct Cushion
$645 CAD