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Heart|Lab Grown|IGI

1.23ct E VVS1 Heart Lab Grown Diamond

ID • E/VVS1 • IGI LG840634566

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840634566

Diamond specifications and retailer prices

From $373 NZD
$210 USD
As of October 30, 2026
Save $1,526 NZD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,899 NZD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.23ct lab-grown heart diamond

This 1.23ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG840634566 or 840634566. Listed at 19 retailers as of October 30, 2026, with prices from $373 to $1,899, a $1,526 spread on the same certified stone. Brilliant Earth lists it at $1,899. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.2°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634566
Dimensions6.73 × 7.32 × 4.20 mm
L/W Ratio1.09
Girdle conditionFaceted
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
6.73 mm7.32 mm1.23 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634566
Side View
Table 61.0%Crown 38.2°Girdle: STK-THKPavilion 38.6°Culet: NoneDepth 57.4%

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: Oct 30
Current: $1,899 NZD|Low: $373 NZD|High: $1,915 NZD|Avg: $1,051 NZD
Brilliant Earth
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 11$373 NZD
Retailer 5$419 NZD
Retailer 4$433 NZD
Retailer 9$463 NZD
Retailer 17$463 NZD
Retailer 2$569 NZD
Retailer 13$782 NZD
Retailer 15$795 NZD
Retailer 12$855 NZD
Retailer 19$896 NZD
Retailer 3$1,018 NZD
Retailer 16$1,131 NZD
Retailer 8$1,489 NZD
Retailer 18$1,494 NZD
Retailer 7$1,506 NZD
Retailer 10$1,579 NZD
Retailer 6$1,583 NZD
Retailer 14$1,866 NZD
Brilliant Earth$1,899 NZD

15 data points across 19 retailers

19 retailers$373 NZD to $1,899 NZD

A
Cheapest Retailer
-
$373 NZD
$210 USD
A
Retailer 2
-
$419 NZD
$236 USD
View
Final sale: no returns
A
Retailer 3
-
$433 NZD
$244 USD
View
A
Retailer 4
-
$463 NZD
$261 USD
View
A
Retailer 5
-
$463 NZD
$261 USD
View
A
Retailer 6
-
$569 NZD
£252 GBP
View
A
Retailer 7
-
$782 NZD
€420 EUR
View
A
Retailer 8
-
$795 NZD
ZAR 7,243 ZAR
View
A
Retailer 9
-
$855 NZD
£380 GBP
View
B+
Retailer 10
-
$896 NZD
$505 USD
View
B+
Retailer 11
-
$1,018 NZD
$574 USD
View
B+
Retailer 12
-
$1,131 NZD
A$981 AUD
View
B
Retailer 13
-
$1,489 NZD
$839 USD
View
B
Retailer 14
-
$1,494 NZD
$842 USD
View
B
Retailer 15
-
$1,506 NZD
SGD 1,147 SGD
View
B
Retailer 16
-
$1,579 NZD
$890 USD
View
B
Retailer 17
-
$1,583 NZD
$892 USD
View
B
Retailer 18
-
$1,866 NZD
£828 GBP
View
Most Expensive
B
Brilliant Earth
22143047A · Oct 30
$1,899 NZD
$1,070 USD
View
18 more retailers have this diamond
Prices start from $373 NZDSave up to $1,526 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
$373 NZD