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Heart|Lab Grown|IGI

1.09ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG831648664

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831648664

Diamond specifications and retailer prices

From $217 SGD
As of November 6, 2026
Save $1,014 SGD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,230 SGD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.09ct lab-grown heart diamond

This 1.09ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831648664 or 831648664. Listed at 15 retailers as of November 6, 2026, with prices from $217 to $1,230, a $1,014 spread on the same certified stone. Brilliant Earth lists it at $1,230. 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

1.09
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831648664
Dimensions7.44 × 6.51 × 4.05 mm
L/W Ratio1.14
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.44 mm6.51 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG831648664
Side View
Table 61.0%Crown 34.1°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 54.4%

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 6
Current: $1,230 SGD|Low: $217 SGD|High: $1,269 SGD|Avg: $625 SGD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5$217 SGD
Retailer 2$310 SGD
Retailer 3$413 SGD
Retailer 10$436 SGD
Retailer 7$441 SGD
Retailer 6$456 SGD
Retailer 8$628 SGD
Retailer 9$664 SGD
Retailer 4$1,123 SGD
Brilliant Earth$1,230 SGD

39 data points across 10 retailers

15 retailers$217 SGD to $1,230 SGD

Retailer 1
-
$196 SGD
Price last confirmed 20 days ago
A
Retailer 2
-
$217 SGD
View
Final sale: no returns
Retailer 3
-
$228 SGD
View
Price last confirmed 22 days ago
Retailer 4
-
$244 SGD
View
Price last confirmed 22 days ago
A
Retailer 5
-
$278 SGD
View
A
Retailer 6
-
$310 SGD
View
B+
Retailer 7
-
$413 SGD
View
Retailer 8
-
$436 SGD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$441 SGD
View
B+
Retailer 10
-
$456 SGD
View
B
Retailer 11
-
$628 SGD
View
B
Retailer 12
-
$664 SGD
View
Retailer 13
-
$782 SGD
View
Price last confirmed 21 days ago
B
Retailer 14
-
$1,123 SGD
View
Most Expensive
B
Brilliant Earth
21274495A · Nov 6
$1,230 SGD
$960 USD
View
14 more retailers have this diamond
Prices start from $217 SGDSave up to $1,014 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
1.09ct Heart
$217 SGD