CaratHunter
Plans
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 $336 AUD
$236 USD
As of November 1, 2026
Save $1,187 AUD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,523 AUD at Brilliant Earth · As of October 31, 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 14 retailers as of October 31, 2026, with prices from $336 to $1,523, a $1,187 spread on the same certified stone. Brilliant Earth lists it at $1,523. 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: Nov 1
Current: $641 AUD|Low: $336 AUD|High: $1,497 AUD|Avg: $871 AUD|+0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 2$336 AUD
Retailer 6$455 AUD
Retailer 8$625 AUD
Retailer 11$638 AUD
Retailer 1$641 AUD
Retailer 7$686 AUD
Retailer 12$817 AUD
Retailer 13$908 AUD
Retailer 9$1,199 AUD
Retailer 3$1,208 AUD
Retailer 4$1,267 AUD
Retailer 5$1,270 AUD
Retailer 10$1,497 AUD

7 data points across 13 retailers

14 retailers$336 AUD to $1,523 AUD

A
Cheapest Retailer
-
$336 AUD
$236 USD
Final sale: no returns
A
Retailer 2
-
$455 AUD
£252 GBP
View
A
Retailer 3
-
$625 AUD
€418 EUR
View
A
Retailer 4
-
$638 AUD
$448 USD
View
A
Retailer 5
-
$641 AUD
ZAR 7,279 ZAR
View
A
Retailer 6
-
$686 AUD
£380 GBP
View
B+
Retailer 7
-
$817 AUD
$574 USD
View
B+
Retailer 8
-
$908 AUD
View
B
Retailer 9
-
$1,199 AUD
$842 USD
View
B
Retailer 10
-
$1,208 AUD
SGD 1,147 SGD
View
B
Retailer 11
-
$1,267 AUD
$890 USD
View
B
Retailer 12
-
$1,270 AUD
$892 USD
View
B
Retailer 13
-
$1,497 AUD
£828 GBP
View
Most Expensive
B
Brilliant Earth
22311013A · Oct 31
$1,523 AUD
$1,070 USD
View
13 more retailers have this diamond
Prices start from $336 AUDSave up to $1,187 AUD

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
$336 AUD