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Heart|Lab Grown|IGI

1.09ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG805618652

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG805618652

Diamond specifications and retailer prices

From $178 USD
As of October 24, 2026
Save $711 USD (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $889 USD at MOH London · As of October 25, 2026
View at MOH London

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 LG805618652 or 805618652. Listed at 15 retailers as of October 24, 2026, with prices from $178 to $889, a $711 spread on the same certified stone. MOH London lists it at $889. 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 angle30.9°
Pavilion angle42.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805618652
Dimensions7.30 × 6.42 × 4.15 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
7.30 mm6.42 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG805618652
Side View
Table 61.0%Crown 30.9°Girdle: THN-STKPavilion 42.8°Culet: NoneDepth 56.8%

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 24
Current: $889 USD|Low: $149 USD|High: $960 USD|Avg: $416 USD|-2.1%
MOH London
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
October 30, 2026
Retailer 6$153 USD
Retailer 4$171 USD
Retailer 15$178 USD
Retailer 14$190 USD
Retailer 8$247 USD
Retailer 9$329 USD
Retailer 7$340 USD
Retailer 13$346 USD
Retailer 10$408 USD
Retailer 3$436 USD
Retailer 12$490 USD
Retailer 5$523 USD
Retailer 2$610 USD
Retailer 11$610 USD
MOH London$889 USD

42 data points across 15 retailers

15 retailers$178 USD to $889 USD

Retailer 1
-
$153 USD
Price last confirmed 7 days ago
A
Retailer 2
-
$178 USD
View
A
Retailer 3
-
$190 USD
View
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
-
$436 USD
View
B
Retailer 11
-
$490 USD
View
B
Retailer 12
-
$523 USD
SGD 707 SGD
View
B
Retailer 13
-
$610 USD
View
B
Retailer 14
-
$610 USD
View
Most Expensive
B
MOH London
LG805618652 · Oct 25
$889 USD
£700 GBP
View
14 more retailers have this diamond
Prices start from $178 USDSave up to $711 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
$178 USD