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 $236 USD
As of October 30, 2026
Save $834 USD (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,070 USD 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 $236 to $1,070, a $834 spread on the same certified stone. Brilliant Earth lists it at $1,070. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $320 USD|Low: $236 USD|High: $1,052 USD|Avg: $605 USD|-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$236 USD
Retailer 1$320 USD
Retailer 6$441 USD
Retailer 8$448 USD
Retailer 9$448 USD
Retailer 5$482 USD
Retailer 10$574 USD
Retailer 11$638 USD
Retailer 2$849 USD
Retailer 3$890 USD
Retailer 4$892 USD
Retailer 7$1,052 USD

5 data points across 12 retailers

13 retailers$236 USD to $1,070 USD

A
Cheapest Retailer
-
$236 USD
Final sale: no returns
A
Retailer 2
-
$320 USD
£252 GBP
View
A
Retailer 3
-
$441 USD
€420 EUR
View
A
Retailer 4
-
$448 USD
View
A
Retailer 5
-
$448 USD
ZAR 7,243 ZAR
View
A
Retailer 6
-
$482 USD
£380 GBP
View
B+
Retailer 7
-
$574 USD
View
B+
Retailer 8
-
$638 USD
A$981 AUD
View
B
Retailer 9
-
$849 USD
SGD 1,147 SGD
View
B
Retailer 10
-
$890 USD
View
B
Retailer 11
-
$892 USD
View
B
Retailer 12
-
$1,052 USD
£828 GBP
View
Most Expensive
B
Brilliant Earth
22311013A · Oct 28
$1,070 USD
View
12 more retailers have this diamond
Prices start from $236 USDSave up to $834 USD

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
$236 USD