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Heart|Lab Grown|IGI

5.12ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG666442771

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG666442771

Diamond specifications and retailer prices

From €10,540 EUR
$11,775 USD
As of October 26, 2026
2 retailers carry this diamond
Most expensive: €23,004 EUR at Brilliant Earth · As of October 18, 2026
View at Brilliant Earth

About this 5.12ct lab-grown heart diamond

This 5.12ct lab-grown heart sits in the over five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG666442771 or 666442771. Listed at 2 retailers as of October 26, 2026. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.12
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG666442771
Dimensions11.96 × 10.75 × 7.02 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
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
11.96 mm10.75 mm5.12 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG666442771
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 39°Culet: NoneDepth 58.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 26
Current: €23,004 EUR|Low: €8,789 EUR|High: €116,092 EUR|Avg: €43,534 EUR|-32.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 4, 2026
Retailer 7€8,789 EUR
Retailer 2€10,540 EUR
Retailer 8€11,976 EUR
Retailer 6€14,493 EUR
Retailer 11€19,638 EUR
Brilliant Earth€23,004 EUR
Retailer 5€23,241 EUR
Retailer 9€38,655 EUR
Retailer 10€44,183 EUR
Retailer 4€84,595 EUR
Retailer 3€113,839 EUR

52 data points across 11 retailers

2 retailers

A
Cheapest Retailer
-
€10,540 EUR
$11,775 USD
Most Expensive
Brilliant Earth
17792860Y · Oct 18
€23,004 EUR
$25,700 USD
View
Price last confirmed 13 days ago
1 more retailer has this diamond
Prices start from €10,540 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
5.12ct Heart
€10,540 EUR