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Round|Lab Grown|IGI

3.71ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG639459451

Shape and cutting style on the report: Round brilliant

Certificate IGI LG639459451

Diamond specifications and retailer prices

From $1,849 CAD
As of October 30, 2026
Save $597 CAD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,446 CAD at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

About this 3.71ct lab-grown round diamond

This 3.71ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG639459451 or 639459451. Listed at 2 retailers as of October 30, 2026, with prices from $1,849 to $2,446, a $597 spread on the same certified stone. The Diamond Guys lists it at $2,446. 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
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639459451
Dimensions10.08 × 10.04 × 6.04 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
10.08 mm10.04 mm3.71 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG639459451
Side View
Table 59.0%Crown 34.2°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,883 CAD|Low: $374 CAD|High: $7,068 CAD|Avg: $1,883 CAD|-30.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 3, 2026
Retailer 4$1,018 CAD
Retailer 8$1,127 CAD
Retailer 10$1,235 CAD
Retailer 12$1,259 CAD
Retailer 9$1,456 CAD
Retailer 6$1,457 CAD
Retailer 5$1,549 CAD
Retailer 7$1,849 CAD
Retailer 2$2,403 CAD
The Diamond Guys$2,446 CAD
Retailer 3$3,212 CAD
Retailer 1$3,883 CAD
Retailer 11$3,883 CAD

62 data points across 13 retailers

2 retailers$1,849 CAD to $2,446 CAD

B+
Cheapest Retailer
-
$1,849 CAD
Most Expensive
B
The Diamond Guys
1954434369 · Oct 30
$2,446 CAD
$1,751 USD
View
1 more retailer has this diamond
Prices start from $1,849 CADSave up to $597 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.

B+
3.71ct Round
$1,849 CAD