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Heart|Lab Grown|IGI

1.23ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG836612562

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836612562

Diamond specifications and retailer prices

From €308 EUR
$344 USD
As of October 30, 2026
Save €2,001 EUR (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €2,309 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836612562 or 836612562. Listed at 19 retailers as of October 30, 2026, with prices from €308 to €2,309, a €2,001 spread on the same certified stone. Brilliant Earth lists it at €2,309. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836612562
Dimensions6.51 × 7.40 × 4.30 mm
L/W Ratio1.14
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
6.51 mm7.40 mm1.23 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836612562
Side View
Table 57.0%Crown 36.5°Girdle: STK-THKPavilion 37.5°Culet: NoneDepth 58.1%

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: €2,309 EUR|Low: €308 EUR|High: €2,891 EUR|Avg: €950 EUR|-20.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 8€308 EUR
Retailer 3€357 EUR
Retailer 9€365 EUR
Retailer 17€382 EUR
Retailer 19€382 EUR
Retailer 2€393 EUR
Retailer 16€519 EUR
Retailer 6€601 EUR
Retailer 10€614 EUR
Retailer 15€656 EUR
Retailer 12€686 EUR
Retailer 4€737 EUR
Retailer 13€949 EUR
Retailer 18€1,227 EUR
Retailer 7€1,265 EUR
Retailer 11€1,379 EUR
Retailer 14€1,499 EUR
Retailer 5€1,584 EUR
Brilliant Earth€2,309 EUR

29 data points across 19 retailers

19 retailers€308 EUR to €2,309 EUR

A
Cheapest Retailer
-
€308 EUR
$344 USD
A
Retailer 2
-
€357 EUR
$399 USD
View
A
Retailer 3
-
€365 EUR
$408 USD
View
Final sale: no returns
Retailer 4
-
€382 EUR
$427 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
€382 EUR
$427 USD
View
A
Retailer 6
-
€393 EUR
£346 GBP
View
A
Retailer 7
-
€519 EUR
$580 USD
View
A
Retailer 8
-
€601 EUR
$671 USD
View
A
Retailer 9
-
€614 EUR
$686 USD
View
B+
Retailer 10
-
€656 EUR
ZAR 11,842 ZAR
View
B+
Retailer 11
-
€686 EUR
£603 GBP
View
B+
Retailer 12
-
€737 EUR
$823 USD
View
B+
Retailer 13
-
€949 EUR
$1,060 USD
View
B+
Retailer 14
-
€1,227 EUR
$1,371 USD
View
B+
Retailer 15
-
€1,265 EUR
$1,414 USD
View
B
Retailer 16
-
€1,379 EUR
SGD 2,082 SGD
View
B
Retailer 17
-
€1,499 EUR
£1,319 GBP
View
B
Retailer 18
-
€1,584 EUR
$1,770 USD
View
Most Expensive
B
Brilliant Earth
21621190A · Oct 31
€2,309 EUR
$2,580 USD
View
18 more retailers have this diamond
Prices start from €308 EURSave up to €2,001 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
€308 EUR