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 €211 EUR
$236 USD
As of October 30, 2026
Save €747 EUR (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €958 EUR 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 30, 2026, with prices from €211 to €958, a €747 spread on the same certified stone. Brilliant Earth lists it at €958. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €432 EUR|Low: €211 EUR|High: €941 EUR|Avg: €548 EUR|+0.6%
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€211 EUR
Retailer 8€287 EUR
Retailer 6€393 EUR
Retailer 10€401 EUR
Retailer 11€401 EUR
Retailer 1€432 EUR
Retailer 12€514 EUR
Retailer 13€571 EUR
Retailer 7€754 EUR
Retailer 3€760 EUR
Retailer 4€797 EUR
Retailer 5€798 EUR
Retailer 9€941 EUR

7 data points across 13 retailers

14 retailers€211 EUR to €958 EUR

A
Cheapest Retailer
-
€211 EUR
$236 USD
Final sale: no returns
A
Retailer 2
-
€287 EUR
£252 GBP
View
A
Retailer 3
-
€393 EUR
View
A
Retailer 4
-
€401 EUR
$448 USD
View
A
Retailer 5
-
€401 EUR
ZAR 7,243 ZAR
View
A
Retailer 6
-
€432 EUR
£380 GBP
View
B+
Retailer 7
-
€514 EUR
$574 USD
View
B+
Retailer 8
-
€571 EUR
A$981 AUD
View
B
Retailer 9
-
€754 EUR
$842 USD
View
B
Retailer 10
-
€760 EUR
SGD 1,147 SGD
View
B
Retailer 11
-
€797 EUR
$890 USD
View
B
Retailer 12
-
€798 EUR
$892 USD
View
B
Retailer 13
-
€941 EUR
£828 GBP
View
Most Expensive
B
Brilliant Earth
22311013A · Oct 31
€958 EUR
$1,070 USD
View
13 more retailers have this diamond
Prices start from €211 EURSave up to €747 EUR

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
€211 EUR