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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 $218 USD
HK$1,700 HKD
As of October 30, 2026
Save $742 USD (77%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $960 USD at Brilliant Earth · As of October 29, 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 14 retailers as of October 29, 2026, with prices from $218 to $960, a $742 spread on the same certified stone. Brilliant Earth lists it at $960. 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
Color
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: Oct 30
Current: $960 USD|Low: $171 USD|High: $990 USD|Avg: $458 USD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 9$171 USD
Retailer 3$218 USD
Retailer 4$247 USD
Retailer 5$329 USD
Retailer 11$340 USD
Retailer 8$346 USD
Retailer 6$408 USD
Retailer 2$484 USD
Retailer 10$523 USD
Retailer 7$889 USD
Brilliant Earth$960 USD

39 data points across 11 retailers

14 retailers$218 USD to $960 USD

Retailer 1
-
$153 USD
Price last confirmed 13 days ago
Retailer 2
-
$178 USD
View
Price last confirmed 16 days ago
Retailer 3
-
$190 USD
View
Price last confirmed 15 days ago
A
Retailer 4
-
$218 USD
HK$1,700 HKD
View
A
Retailer 5
-
$247 USD
£194 GBP
View
B+
Retailer 6
-
$329 USD
£259 GBP
View
B+
Retailer 7
-
$340 USD
View
B+
Retailer 8
-
$346 USD
View
B+
Retailer 9
-
$408 USD
£321 GBP
View
B
Retailer 10
-
$484 USD
View
B
Retailer 11
-
$523 USD
SGD 707 SGD
View
Retailer 12
-
$610 USD
View
Price last confirmed 14 days ago
B
Retailer 13
-
$889 USD
£700 GBP
View
Most Expensive
B
Brilliant Earth
21274495A · Oct 29
$960 USD
View
13 more retailers have this diamond
Prices start from $218 USDSave up to $742 USD

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
$218 USD