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Round|Lab Grown|IGI

3.51ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG819620033

Shape and cutting style on the report: Round brilliant

Certificate IGI LG819620033

Diamond specifications and retailer prices

From $520 CAD
$372 USD
As of November 1, 2026
Save $2,889 CAD (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,408 CAD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.51ct lab-grown round diamond

This 3.51ct 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 LG819620033 or 819620033. Listed at 11 retailers as of October 31, 2026, with prices from $520 to $3,408, a $2,889 spread on the same certified stone. Brilliant Earth lists it at $3,408. 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

3.51
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819620033
Dimensions9.82 × 9.89 × 5.83 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.82 mm9.89 mm3.51 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819620033
Side View
Table 61.0%Crown 32.2°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 59.2%

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: Nov 1
Current: $3,408 CAD|Low: $514 CAD|High: $6,384 CAD|Avg: $2,006 CAD|-46.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 3$520 CAD
Retailer 8$603 CAD
Retailer 6$902 CAD
Retailer 2$1,037 CAD
Retailer 9$1,215 CAD
Retailer 7$1,891 CAD
Retailer 5$1,893 CAD
Retailer 10$2,073 CAD
Retailer 4$2,524 CAD
Retailer 11$2,615 CAD
Brilliant Earth$3,408 CAD

30 data points across 11 retailers

11 retailers$520 CAD to $3,408 CAD

A
Cheapest Retailer
-
$520 CAD
$372 USD
A
Retailer 2
-
$603 CAD
$432 USD
View
Retailer 3
-
$902 CAD
£509 GBP
View
Price last confirmed 15 days ago
A
Retailer 4
-
$1,037 CAD
€707 EUR
View
A
Retailer 5
-
$1,215 CAD
$870 USD
View
B+
Retailer 6
-
$1,891 CAD
$1,354 USD
View
B+
Retailer 7
-
$1,893 CAD
$1,355 USD
View
B+
Retailer 8
-
$2,073 CAD
$1,484 USD
View
B+
Retailer 9
-
$2,524 CAD
£1,423 GBP
View
Retailer 10
-
$2,615 CAD
SGD 2,530 SGD
View
Price last confirmed 19 days ago
Most Expensive
B
Brilliant Earth
20802674A · Oct 31
$3,408 CAD
$2,440 USD
View
10 more retailers have this diamond
Prices start from $520 CADSave up to $2,889 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
3.51ct Round
$520 CAD