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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 $246 AUD
As of November 6, 2026
Save $1,151 AUD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,397 AUD 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 $246 to $1,397, a $1,151 spread on the same certified stone. Brilliant Earth lists it at $1,397. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,397 AUD|Low: $246 AUD|High: $1,441 AUD|Avg: $709 AUD|-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$246 AUD
Retailer 2$352 AUD
Retailer 3$469 AUD
Retailer 10$495 AUD
Retailer 7$501 AUD
Retailer 6$518 AUD
Retailer 8$713 AUD
Retailer 9$754 AUD
Retailer 4$1,275 AUD
Brilliant Earth$1,397 AUD

39 data points across 10 retailers

15 retailers$246 AUD to $1,397 AUD

Retailer 1
-
$223 AUD
Price last confirmed 20 days ago
A
Retailer 2
-
$246 AUD
View
Final sale: no returns
Retailer 3
-
$259 AUD
View
Price last confirmed 22 days ago
Retailer 4
-
$277 AUD
View
Price last confirmed 22 days ago
A
Retailer 5
-
$316 AUD
View
A
Retailer 6
-
$352 AUD
View
B+
Retailer 7
-
$469 AUD
View
Retailer 8
-
$495 AUD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$501 AUD
View
B+
Retailer 10
-
$518 AUD
View
B
Retailer 11
-
$713 AUD
View
B
Retailer 12
-
$754 AUD
View
Retailer 13
-
$888 AUD
View
Price last confirmed 21 days ago
B
Retailer 14
-
$1,275 AUD
View
Most Expensive
B
Brilliant Earth
21274495A · Nov 6
$1,397 AUD
$960 USD
View
14 more retailers have this diamond
Prices start from $246 AUDSave up to $1,151 AUD

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
$246 AUD