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Heart|Lab Grown|IGI

4.00ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG811622391

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG811622391

Diamond specifications and retailer prices

From $5,315 USD
As of November 2, 2026
Save $16,636 USD (76%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $21,951 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4ct lab-grown heart diamond

This 4ct 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 LG811622391 or 811622391. Listed at 20 retailers as of October 31, 2026, with prices from $5,315 to $21,951, a $16,636 spread on the same certified stone. Taylor and Hart lists it at $21,951. 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

4.00
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811622391
Dimensions10.36 × 10.72 × 6.33 mm
L/W Ratio1.03
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
10.36 mm10.72 mm4.00 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811622391
Side View
Table 56.0%Crown 35.3°Girdle: MED-THKPavilion 39.9°Culet: NoneDepth 59.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $11,172 USD|Low: $5,103 USD|High: $19,860 USD|Avg: $10,124 USD|+7.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 2, 2026
Retailer 3$5,315 USD
Retailer 5$5,723 USD
Retailer 6$5,953 USD
Retailer 4$6,166 USD
Retailer 2$6,180 USD
Retailer 14$7,593 USD
Retailer 10$7,838 USD
Retailer 12$9,050 USD
Retailer 1$11,172 USD
Retailer 9$11,622 USD
Retailer 7$12,546 USD
Retailer 11$13,123 USD
Retailer 8$13,571 USD
Retailer 13$19,260 USD

38 data points across 14 retailers

20 retailers$5,315 USD to $21,951 USD

A
Cheapest Retailer
-
$5,315 USD
A
Retailer 2
-
$5,570 USD
View
A
Retailer 3
-
$5,723 USD
View
A
Retailer 4
-
$5,953 USD
View
Final sale: no returns
A
Retailer 5
-
$6,049 USD
View
A
Retailer 6
-
$6,166 USD
View
Retailer 7
-
$6,166 USD
View
Price last confirmed 17 days ago
A
Retailer 8
-
$6,180 USD
View
A
Retailer 9
-
$7,319 USD
View
A
Retailer 10
-
$7,593 USD
View
A
Retailer 11
-
$7,838 USD
£6,171 GBP
View
B+
Retailer 12
-
$9,050 USD
View
B+
Retailer 13
-
$11,172 USD
€10,640 EUR
View
B+
Retailer 14
-
$11,622 USD
View
B+
Retailer 15
-
$12,546 USD
£9,879 GBP
View
B+
Retailer 16
-
$13,123 USD
ZAR 211,997 ZAR
View
B+
Retailer 17
-
$13,571 USD
A$20,878 AUD
View
B
Retailer 18
-
$17,146 USD
View
B
Retailer 19
-
$19,260 USD
View
Most Expensive
B
Taylor and Hart
74W3RJB · Oct 31
$21,951 USD
View
19 more retailers have this diamond
Prices start from $5,315 USDSave up to $16,636 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
4.00ct Heart
$5,315 USD