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Heart|Lab Grown|IGI

4.23ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG685525775

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG685525775

Diamond specifications and retailer prices

From €5,073 EUR
$5,690 USD
As of November 1, 2026
2 retailers carry this diamond
Most expensive: €18,161 EUR at Brilliant Earth · As of October 18, 2026
View at Brilliant Earth

About this 4.23ct lab-grown heart diamond

This 4.23ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG685525775 or 685525775. Listed at 2 retailers as of November 1, 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

4.23
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685525775
Dimensions11.14 × 9.90 × 6.62 mm
L/W Ratio1.13
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
11.14 mm9.90 mm4.23 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685525775
Side View
Table 59.0%Crown 36.8°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 59.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: €18,161 EUR|Low: €4,107 EUR|High: €57,560 EUR|Avg: €22,506 EUR|-14.8%
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 2€5,073 EUR
Retailer 6€5,820 EUR
Retailer 9€7,601 EUR
Retailer 5€8,372 EUR
Retailer 4€8,622 EUR
Retailer 8€10,037 EUR
Retailer 11€17,294 EUR
Brilliant Earth€18,161 EUR
Retailer 10€22,611 EUR
Retailer 7€45,408 EUR
Retailer 3€56,450 EUR

52 data points across 11 retailers

2 retailers

A
Cheapest Retailer
-
€5,073 EUR
$5,690 USD
Most Expensive
Brilliant Earth
17792906Y · Oct 18
€18,161 EUR
$20,370 USD
View
Price last confirmed 14 days ago
1 more retailer has this diamond
Prices start from €5,073 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
4.23ct Heart
€5,073 EUR