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Round|Lab Grown|IGI

3.81ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG626421301

Shape and cutting style on the report: Round brilliant

Certificate IGI LG626421301

Diamond specifications and retailer prices

From $1,899 CAD
As of October 30, 2026
Save $612 CAD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,512 CAD at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 3.81ct lab-grown round diamond

This 3.81ct 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 LG626421301 or 626421301. Listed at 2 retailers as of October 30, 2026, with prices from $1,899 to $2,512, a $612 spread on the same certified stone. The Diamond Guys lists it at $2,512. 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

3.81
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG626421301
Dimensions10.13 × 10.09 × 6.10 mm
L/W Ratio1.00
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
10.13 mm10.09 mm3.81 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG626421301
Side View
Table 58.0%Crown 34.2°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.3%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: $3,150 CAD|Low: $377 CAD|High: $4,652 CAD|Avg: $1,894 CAD|-4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
The Diamond Guys
August 3, 2026
Retailer 3$1,028 CAD
Retailer 6$1,145 CAD
Retailer 9$1,246 CAD
Retailer 11$1,267 CAD
Retailer 8$1,470 CAD
Retailer 5$1,532 CAD
Retailer 4$1,567 CAD
Retailer 7$1,899 CAD
Retailer 2$2,431 CAD
The Diamond Guys$2,512 CAD
Retailer 1$3,150 CAD
Retailer 10$3,911 CAD

59 data points across 12 retailers

2 retailers$1,899 CAD to $2,512 CAD

B+
Cheapest Retailer
-
$1,899 CAD
Most Expensive
B
The Diamond Guys
1954434350 · Nov 1
$2,512 CAD
$1,798 USD
View
1 more retailer has this diamond
Prices start from $1,899 CADSave up to $612 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+
3.81ct Round
$1,899 CAD