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Round|Lab Grown|IGI

3.09ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG821689508

Shape and cutting style on the report: Round brilliant

Certificate IGI LG821689508

Diamond specifications and retailer prices

From $588 CAD
As of November 5, 2026
Save $4,887 CAD (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,475 CAD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 3.09ct lab-grown round diamond

This 3.09ct 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 LG821689508 or 821689508. Listed at 17 retailers as of November 5, 2026, with prices from $588 to $5,475, a $4,887 spread on the same certified stone. Brilliant Earth lists it at $5,475. 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

3.09
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821689508
Dimensions9.36 × 9.40 × 5.74 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.36 mm9.40 mm3.09 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821689508
Side View
Table 58.0%Crown 33.2°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.2%

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 5
Current: $5,475 CAD|Low: $588 CAD|High: $5,475 CAD|Avg: $1,760 CAD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 11$588 CAD
Retailer 4$729 CAD
Retailer 8$936 CAD
Retailer 10$1,020 CAD
Retailer 12$1,151 CAD
Retailer 5$1,186 CAD
Retailer 7$1,249 CAD
Retailer 3$1,387 CAD
Retailer 9$2,046 CAD
Retailer 6$2,437 CAD
Retailer 2$2,670 CAD
Brilliant Earth$5,475 CAD

39 data points across 12 retailers

17 retailers$588 CAD to $5,475 CAD

A
Cheapest Retailer
-
$588 CAD
Retailer 2
-
$588 CAD
View
Price last confirmed 45 days ago
A
Retailer 3
-
$659 CAD
View
Retailer 4
-
$719 CAD
View
Price last confirmed 45 days ago
A
Retailer 5
-
$729 CAD
View
Retailer 6
-
$729 CAD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$936 CAD
View
B+
Retailer 8
-
$1,151 CAD
View
A
Retailer 9
-
$1,186 CAD
View
Retailer 10
-
$1,249 CAD
View
Price last confirmed 8 days ago
A
Retailer 11
-
$1,387 CAD
View
B
Retailer 12
-
$2,046 CAD
View
Retailer 13
-
$2,345 CAD
View
Price last confirmed 46 days ago
B
Retailer 14
-
$2,345 CAD
View
B
Retailer 15
-
$2,437 CAD
View
B
Retailer 16
-
$2,670 CAD
View
Most Expensive
B
Brilliant Earth
21445474A · Nov 5
$5,475 CAD
$3,920 USD
View
16 more retailers have this diamond
Prices start from $588 CADSave up to $4,887 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
3.09ct Round
$588 CAD