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 $5,690 USD
As of November 1, 2026
2 retailers carry this diamond
Most expensive: $20,370 USD 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: $20,370 USD|Low: $4,606 USD|High: $64,559 USD|Avg: $25,243 USD|-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$5,690 USD
Retailer 6$6,528 USD
Retailer 9$8,525 USD
Retailer 5$9,390 USD
Retailer 4$9,670 USD
Retailer 8$11,258 USD
Retailer 11$19,397 USD
Brilliant Earth$20,370 USD
Retailer 10$25,361 USD
Retailer 7$50,930 USD
Retailer 3$63,314 USD

52 data points across 11 retailers

2 retailers

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

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
$5,690 USD