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Heart|Lab Grown|IGI

6.29ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG811638601

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG811638601

Diamond specifications and retailer prices

From $17,967 USD
As of November 1, 2026
Save $36,435 USD (67%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $54,402 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 6.29ct lab-grown heart diamond

This 6.29ct lab-grown heart sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811638601 or 811638601. Listed at 16 retailers as of October 31, 2026, with prices from $17,967 to $54,402, a $36,435 spread on the same certified stone. Taylor and Hart lists it at $54,402. 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

6.29
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638601
Dimensions12.83 × 11.69 × 7.22 mm
L/W Ratio1.10
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
12.83 mm11.69 mm6.29 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638601
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 37.6°Culet: NoneDepth 56.3%

Caratlytics Score

How it works →
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 1
Current: $21,260 USD|Low: $17,967 USD|High: $88,531 USD|Avg: $35,853 USD|-23.3%
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
Retailer 15
Retailer 16
Taylor and Hart
November 2, 2026
Retailer 14$17,967 USD
Retailer 8$18,115 USD
Retailer 3$19,832 USD
Retailer 2$19,991 USD
Retailer 1$21,260 USD
Retailer 4$22,741 USD
Retailer 15$23,005 USD
Retailer 10$23,525 USD
Retailer 16$25,560 USD
Retailer 7$27,586 USD
Retailer 6$34,900 USD
Retailer 11$35,315 USD
Retailer 9$38,827 USD
Retailer 12$39,216 USD
Retailer 13$44,518 USD
Taylor and Hart$54,402 USD
Retailer 5$81,214 USD

36 data points across 17 retailers

16 retailers$17,967 USD to $54,402 USD

A
Cheapest Retailer
-
$17,967 USD
A
Retailer 2
-
$19,832 USD
View
A
Retailer 3
-
$19,991 USD
View
A
Retailer 4
-
$21,260 USD
View
A
Retailer 5
-
$22,741 USD
View
A
Retailer 6
-
$23,005 USD
View
A
Retailer 7
-
$23,525 USD
View
Final sale: no returns
Retailer 8
-
$25,074 USD
View
Price last confirmed 17 days ago
B+
Retailer 9
-
$25,560 USD
View
B+
Retailer 10
-
$34,900 USD
View
B+
Retailer 11
-
$35,315 USD
£27,807 GBP
View
B+
Retailer 12
-
$38,827 USD
€36,978 EUR
View
B+
Retailer 13
-
$39,216 USD
View
B+
Retailer 14
-
$44,518 USD
ZAR 719,200 ZAR
View
Most Expensive
B
Taylor and Hart
5IJ2DGZ · Oct 31
$54,402 USD
View
14 more retailers have this diamond
Prices start from $17,967 USDSave up to $36,435 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
6.29ct Heart
$17,967 USD