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Heart|Lab Grown|IGI

1.23ct E VVS1 Heart Lab Grown Diamond

ID • E/VVS1 • IGI LG830620399

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG830620399

Diamond specifications and retailer prices

From $419 NZD
$236 USD
As of October 30, 2026
Save $1,480 NZD (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,899 NZD at Brilliant Earth · As of October 28, 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 LG830620399 or 830620399. Listed at 13 retailers as of October 28, 2026, with prices from $419 to $1,899, a $1,480 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 angle38.3°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830620399
Dimensions6.79 × 7.35 × 4.19 mm
L/W Ratio1.08
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
6.79 mm7.35 mm1.23 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830620399
Side View
Table 62.0%Crown 38.3°Girdle: MED-THKPavilion 38.2°Culet: NoneDepth 57.0%

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: $569 NZD|Low: $419 NZD|High: $1,866 NZD|Avg: $1,074 NZD|-0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 12$419 NZD
Retailer 1$569 NZD
Retailer 6$782 NZD
Retailer 8$795 NZD
Retailer 9$795 NZD
Retailer 5$855 NZD
Retailer 10$1,018 NZD
Retailer 11$1,131 NZD
Retailer 2$1,506 NZD
Retailer 3$1,579 NZD
Retailer 4$1,583 NZD
Retailer 7$1,866 NZD

5 data points across 12 retailers

13 retailers$419 NZD to $1,899 NZD

A
Cheapest Retailer
-
$419 NZD
$236 USD
Final sale: no returns
A
Retailer 2
-
$569 NZD
£252 GBP
View
A
Retailer 3
-
$782 NZD
€420 EUR
View
A
Retailer 4
-
$795 NZD
$448 USD
View
A
Retailer 5
-
$795 NZD
ZAR 7,243 ZAR
View
A
Retailer 6
-
$855 NZD
£380 GBP
View
B+
Retailer 7
-
$1,018 NZD
$574 USD
View
B+
Retailer 8
-
$1,131 NZD
A$981 AUD
View
B
Retailer 9
-
$1,506 NZD
SGD 1,147 SGD
View
B
Retailer 10
-
$1,579 NZD
$890 USD
View
B
Retailer 11
-
$1,583 NZD
$892 USD
View
B
Retailer 12
-
$1,866 NZD
£828 GBP
View
Most Expensive
B
Brilliant Earth
22311013A · Oct 28
$1,899 NZD
$1,070 USD
View
12 more retailers have this diamond
Prices start from $419 NZDSave up to $1,480 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
$419 NZD