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Heart|Lab Grown|IGI

1.23ct G VVS2 Heart Lab Grown Diamond

EX • G/VVS2 • IGI LG598394354

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG598394354

Diamond specifications and retailer prices

From $374 NZD
As of November 3, 2026
Save $1,563 NZD (81%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,936 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 1.23ct lab-grown heart diamond

This 1.23ct lab-grown heart sits in the classic one-carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG598394354 or 598394354. Listed at 20 retailers as of November 1, 2026, with prices from $374 to $1,936, a $1,563 spread on the same certified stone. MOH London lists it at $1,936. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
G
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG598394354
Dimensions6.83 × 7.32 × 4.33 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.83 mm7.32 mm1.23 ctG / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG598394354
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.2%

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 3
Current: $1,936 NZD|Low: $333 NZD|High: $2,038 NZD|Avg: $889 NZD|-3.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
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Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 18
November 4, 2026
Retailer 4$334 NZD
Retailer 5$374 NZD
Retailer 18$388 NZD
Retailer 8$430 NZD
Retailer 10$430 NZD
Retailer 17$560 NZD
Retailer 14$713 NZD
Retailer 11$744 NZD
Retailer 12$761 NZD
Retailer 3$836 NZD
Retailer 16$854 NZD
Retailer 13$1,009 NZD
Retailer 2$1,336 NZD
Retailer 9$1,384 NZD
Retailer 15$1,389 NZD
Retailer 6$1,427 NZD
Retailer 7$1,441 NZD
MOH London$1,936 NZD

43 data points across 18 retailers

20 retailers$374 NZD to $1,936 NZD

Retailer 1
-
$334 NZD
Price last confirmed 9 days ago
A
Retailer 2
-
$374 NZD
View
Final sale: no returns
Retailer 3
-
$388 NZD
View
Price last confirmed 8 days ago
Retailer 4
-
$430 NZD
View
Price last confirmed 11 days ago
Retailer 5
-
$430 NZD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
$560 NZD
View
A
Retailer 7
-
$713 NZD
View
A
Retailer 8
-
$744 NZD
View
A
Retailer 9
-
$761 NZD
View
B+
Retailer 10
-
$836 NZD
View
B+
Retailer 11
-
$854 NZD
View
B+
Retailer 12
-
$1,009 NZD
View
B+
Retailer 13
-
$1,060 NZD
View
B
Retailer 14
-
$1,336 NZD
View
Retailer 15
-
$1,384 NZD
View
Price last confirmed 11 days ago
B
Retailer 16
-
$1,389 NZD
View
B
Retailer 17
-
$1,427 NZD
View
B
Retailer 18
-
$1,441 NZD
View
Retailer 19
-
$1,441 NZD
View
Price last confirmed 8 days ago
Most Expensive
B
MOH London
LG598394354 · Nov 1
$1,936 NZD
£857 GBP
View
19 more retailers have this diamond
Prices start from $374 NZDSave up to $1,563 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
1.23ct Heart
$374 NZD