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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 $305 NZD
As of November 6, 2026
Save $1,427 NZD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,732 NZD 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 $305 to $1,732, a $1,427 spread on the same certified stone. Brilliant Earth lists it at $1,732. 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: $1,732 NZD|Low: $305 NZD|High: $1,786 NZD|Avg: $879 NZD|-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$305 NZD
Retailer 2$437 NZD
Retailer 3$581 NZD
Retailer 10$613 NZD
Retailer 7$621 NZD
Retailer 6$642 NZD
Retailer 8$884 NZD
Retailer 9$934 NZD
Retailer 4$1,580 NZD
Brilliant Earth$1,732 NZD

39 data points across 10 retailers

15 retailers$305 NZD to $1,732 NZD

Retailer 1
-
$276 NZD
Price last confirmed 20 days ago
A
Retailer 2
-
$305 NZD
View
Final sale: no returns
Retailer 3
-
$321 NZD
View
Price last confirmed 22 days ago
Retailer 4
-
$343 NZD
View
Price last confirmed 22 days ago
A
Retailer 5
-
$391 NZD
View
A
Retailer 6
-
$437 NZD
View
B+
Retailer 7
-
$581 NZD
View
Retailer 8
-
$613 NZD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$621 NZD
View
B+
Retailer 10
-
$642 NZD
View
B
Retailer 11
-
$884 NZD
View
B
Retailer 12
-
$934 NZD
View
Retailer 13
-
$1,100 NZD
View
Price last confirmed 21 days ago
B
Retailer 14
-
$1,580 NZD
View
Most Expensive
B
Brilliant Earth
21274495A · Nov 6
$1,732 NZD
$960 USD
View
14 more retailers have this diamond
Prices start from $305 NZDSave up to $1,427 NZD

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
$305 NZD