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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 $538 SGD
As of November 5, 2026
Save $4,469 SGD (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,007 SGD 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 $538 to $5,007, a $4,469 spread on the same certified stone. Brilliant Earth lists it at $5,007. 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
Colour
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

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: $5,007 SGD|Low: $538 SGD|High: $5,007 SGD|Avg: $1,609 SGD
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 6, 2026
Retailer 11$538 SGD
Retailer 4$667 SGD
Retailer 8$856 SGD
Retailer 10$932 SGD
Retailer 12$1,052 SGD
Retailer 6$1,084 SGD
Retailer 2$1,137 SGD
Retailer 3$1,268 SGD
Retailer 9$1,871 SGD
Retailer 7$2,229 SGD
Retailer 5$2,442 SGD
Brilliant Earth$5,007 SGD

40 data points across 12 retailers

17 retailers$538 SGD to $5,007 SGD

A
Cheapest Retailer
-
$538 SGD
Retailer 2
-
$538 SGD
View
Price last confirmed 45 days ago
A
Retailer 3
-
$603 SGD
View
Retailer 4
-
$658 SGD
View
Price last confirmed 45 days ago
A
Retailer 5
-
$667 SGD
View
Retailer 6
-
$667 SGD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$856 SGD
View
B+
Retailer 8
-
$1,052 SGD
View
A
Retailer 9
-
$1,084 SGD
View
Retailer 10
-
$1,137 SGD
View
A
Retailer 11
-
$1,268 SGD
View
B
Retailer 12
-
$1,871 SGD
View
Retailer 13
-
$2,145 SGD
View
Price last confirmed 46 days ago
B
Retailer 14
-
$2,145 SGD
View
B
Retailer 15
-
$2,229 SGD
View
B
Retailer 16
-
$2,442 SGD
View
Most Expensive
B
Brilliant Earth
21445474A · Nov 5
$5,007 SGD
$3,920 USD
View
16 more retailers have this diamond
Prices start from $538 SGDSave up to $4,469 SGD

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
$538 SGD