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Round|Lab Grown|IGI

3.71ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG666401279

Shape and cutting style on the report: Round brilliant

Certificate IGI LG666401279

Diamond specifications and retailer prices

From $550 CAD
$394 USD
As of October 29, 2026
Save $2,278 CAD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,829 CAD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 3.71ct lab-grown round diamond

This 3.71ct lab-grown round 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 LG666401279 or 666401279. Listed at 14 retailers as of October 28, 2026, with prices from $550 to $2,829, a $2,278 spread on the same certified stone. Rare Carat lists it at $2,829. 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

3.71
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG666401279
Dimensions9.93 × 9.97 × 6.08 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.93 mm9.97 mm3.71 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG666401279
Side View
Table 57.0%Crown 34.6°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $3,593 CAD|Low: $550 CAD|High: $7,100 CAD|Avg: $2,123 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 11$550 CAD
Retailer 6$616 CAD
Retailer 5$682 CAD
Retailer 15$751 CAD
Retailer 12$887 CAD
Retailer 9$914 CAD
Retailer 3$1,083 CAD
Retailer 13$1,085 CAD
Retailer 10$1,116 CAD
Retailer 14$1,151 CAD
Retailer 16$1,662 CAD
Retailer 2$1,914 CAD
Retailer 4$2,193 CAD
Rare Carat$3,593 CAD
Retailer 8$5,420 CAD
Retailer 7$7,100 CAD

4 data points across 16 retailers

14 retailers$550 CAD to $2,829 CAD

A
Cheapest Retailer
-
$550 CAD
$394 USD
A
Retailer 2
-
$616 CAD
$441 USD
View
A
Retailer 3
-
$682 CAD
$488 USD
View
A
Retailer 4
-
$751 CAD
HK$4,200 HKD
View
A
Retailer 5
-
$887 CAD
$635 USD
View
A
Retailer 6
-
$914 CAD
£515 GBP
View
B+
Retailer 7
-
$1,083 CAD
$775 USD
View
A
Retailer 8
-
$1,085 CAD
€740 EUR
View
A
Retailer 9
-
$1,116 CAD
£629 GBP
View
A
Retailer 10
-
$1,151 CAD
$824 USD
View
B+
Retailer 11
-
$1,662 CAD
$1,190 USD
View
B+
Retailer 12
-
$1,914 CAD
$1,370 USD
View
B+
Retailer 13
-
$2,193 CAD
$1,570 USD
View
Most Expensive
B
Rare Carat
KI2794012KF666 · Oct 28
$2,829 CAD
$2,025 USD
View
13 more retailers have this diamond
Prices start from $550 CADSave up to $2,278 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
3.71ct Round
$550 CAD