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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 €305 EUR
As of November 4, 2026
Save €1,985 EUR (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €2,290 EUR at Brilliant Earth · As of November 4, 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 November 4, 2026, with prices from €305 to €2,290, a €1,985 spread on the same certified stone. Brilliant Earth lists it at €2,290. 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
Colour
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

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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: Nov 4
Current: €2,290 EUR|Low: €305 EUR|High: €2,290 EUR|Avg: €812 EUR
Brilliant Earth
Retailer 2
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Retailer 19
November 5, 2026
Retailer 8€305 EUR
Retailer 3€354 EUR
Retailer 9€362 EUR
Retailer 17€379 EUR
Retailer 19€379 EUR
Retailer 12€389 EUR
Retailer 16€515 EUR
Retailer 6€596 EUR
Retailer 10€609 EUR
Retailer 15€652 EUR
Retailer 2€673 EUR
Retailer 4€730 EUR
Retailer 14€951 EUR
Retailer 18€1,217 EUR
Retailer 7€1,254 EUR
Retailer 11€1,367 EUR
Retailer 13€1,479 EUR
Retailer 5€1,571 EUR
Brilliant Earth€2,290 EUR

30 data points across 19 retailers

19 retailers€305 EUR to €2,290 EUR

A
Cheapest Retailer
-
€305 EUR
A
Retailer 2
-
€354 EUR
View
A
Retailer 3
-
€362 EUR
View
Final sale: no returns
Retailer 4
-
€379 EUR
View
Price last confirmed 11 days ago
A
Retailer 5
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€379 EUR
View
A
Retailer 6
-
€389 EUR
View
A
Retailer 7
-
€515 EUR
View
A
Retailer 8
-
€596 EUR
View
A
Retailer 9
-
€609 EUR
View
B+
Retailer 10
-
€652 EUR
View
B+
Retailer 11
-
€673 EUR
View
B+
Retailer 12
-
€730 EUR
View
B+
Retailer 13
-
€951 EUR
View
B+
Retailer 14
-
€1,217 EUR
View
B+
Retailer 15
-
€1,254 EUR
View
B
Retailer 16
-
€1,367 EUR
View
B
Retailer 17
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€1,479 EUR
View
B
Retailer 18
-
€1,571 EUR
View
Most Expensive
B
Brilliant Earth
21621190A · Nov 4
€2,290 EUR
$2,580 USD
View
18 more retailers have this diamond
Prices start from €305 EURSave up to €1,985 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
€305 EUR