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Round|Lab Grown|IGI

3.09ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG685591087

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685591087

Diamond specifications and retailer prices

From $425 SGD
As of November 5, 2026
Save $1,804 SGD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,229 SGD at Rare Carat · As of November 4, 2026
View at Rare Carat

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 LG685591087 or 685591087. Listed at 13 retailers as of November 4, 2026, with prices from $425 to $2,229, a $1,804 spread on the same certified stone. Rare Carat lists it at $2,229. 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 angle34.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685591087
Dimensions9.39 × 9.36 × 5.73 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
9.39 mm9.36 mm3.09 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685591087
Side View
Table 58.0%Crown 34.4°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.1%

Caratlytics Score

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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: $2,229 SGD|Low: $425 SGD|High: $5,543 SGD|Avg: $1,869 SGD|-3.6%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 11$425 SGD
Retailer 8$528 SGD
Retailer 3$588 SGD
Retailer 14$722 SGD
Retailer 2$729 SGD
Retailer 15$848 SGD
Retailer 5$851 SGD
Retailer 9$931 SGD
Retailer 4$1,229 SGD
Retailer 13$1,546 SGD
Retailer 10$1,695 SGD
Retailer 12$2,106 SGD
Rare Carat$2,229 SGD
Retailer 6$5,432 SGD
Retailer 7$5,543 SGD

10 data points across 15 retailers

13 retailers$425 SGD to $2,229 SGD

A
Cheapest Retailer
-
$425 SGD
A
Retailer 2
-
$528 SGD
View
A
Retailer 3
-
$588 SGD
View
A
Retailer 4
-
$722 SGD
View
A
Retailer 5
-
$729 SGD
View
Retailer 6
-
$848 SGD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$851 SGD
View
A
Retailer 8
-
$931 SGD
View
A
Retailer 9
-
$1,229 SGD
View
B+
Retailer 10
-
$1,546 SGD
View
B+
Retailer 11
-
$1,695 SGD
View
B
Retailer 12
-
$2,106 SGD
View
Most Expensive
B
Rare Carat
KI0875910KF685 · Nov 4
$2,229 SGD
$1,745 USD
View
12 more retailers have this diamond
Prices start from $425 SGDSave up to $1,804 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
$425 SGD