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Heart|Lab Grown|IGI

1.23ct E VVS1 Heart Lab Grown Diamond

VG • E/VVS1 • IGI LG831679941

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831679941

Diamond specifications and retailer prices

From $373 NZD
$210 USD
As of October 30, 2026
Save $2,644 NZD (88%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,016 NZD at Brilliant Earth · As of October 29, 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 very-good cut grade and certified by IGI LG831679941 or 831679941. Listed at 11 retailers as of October 29, 2026, with prices from $373 to $3,016, a $2,644 spread on the same certified stone. Brilliant Earth lists it at $3,016. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
E
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.7°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831679941
Dimensions6.69 × 7.78 × 4.00 mm
L/W Ratio1.16
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
6.69 mm7.78 mm1.23 ctE / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831679941
Side View
Table 61.0%Crown 31.7°Girdle: STK-THKPavilion 35.1°Culet: NoneDepth 51.4%

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: $3,016 NZD|Low: $373 NZD|High: $3,016 NZD|Avg: $1,190 NZD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2$373 NZD
Retailer 11$419 NZD
Retailer 10$463 NZD
Retailer 5$569 NZD
Retailer 4$795 NZD
Retailer 6$855 NZD
Retailer 8$1,018 NZD
Retailer 3$1,506 NZD
Retailer 7$1,579 NZD
Retailer 9$1,583 NZD
Brilliant Earth$3,016 NZD

2 data points across 11 retailers

11 retailers$373 NZD to $3,016 NZD

A
Cheapest Retailer
-
$373 NZD
$210 USD
A
Retailer 2
-
$419 NZD
$236 USD
View
Final sale: no returns
A
Retailer 3
-
$463 NZD
$261 USD
View
A
Retailer 4
-
$569 NZD
£252 GBP
View
B+
Retailer 5
-
$795 NZD
$448 USD
View
B+
Retailer 6
-
$855 NZD
£380 GBP
View
B+
Retailer 7
-
$1,018 NZD
$574 USD
View
B
Retailer 8
-
$1,506 NZD
SGD 1,147 SGD
View
B
Retailer 9
-
$1,579 NZD
$890 USD
View
B
Retailer 10
-
$1,583 NZD
$892 USD
View
Most Expensive
B
Brilliant Earth
22348803A · Oct 29
$3,016 NZD
$1,700 USD
View
10 more retailers have this diamond
Prices start from $373 NZDSave up to $2,644 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