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Heart|Lab Grown|IGI

1.51ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG846663660

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG846663660

Diamond specifications and retailer prices

From $1,141 CAD
£643 GBP
As of November 1, 2026
Save $4,223 CAD (79%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $5,364 CAD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846663660 or 846663660. Listed at 9 retailers as of October 31, 2026, with prices from $1,141 to $5,364, a $4,223 spread on the same certified stone. Brilliant Earth lists it at $5,364. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846663660
Dimensions7.73 × 6.86 × 4.78 mm
L/W Ratio1.13
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
7.73 mm6.86 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846663660
Side View
Table 57.0%Crown 36.1°Girdle: STK-THKPavilion 39.5°Culet: NoneDepth 61.8%

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: $5,364 CAD|Low: $1,141 CAD|High: $6,761 CAD|Avg: $2,978 CAD|-20.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 3$1,141 CAD
Retailer 5$1,257 CAD
Retailer 7$1,630 CAD
Retailer 9$1,651 CAD
Retailer 4$2,678 CAD
Retailer 6$4,005 CAD
Retailer 2$4,252 CAD
Retailer 8$4,455 CAD
Brilliant Earth$5,364 CAD

7 data points across 9 retailers

9 retailers$1,141 CAD to $5,364 CAD

A
Cheapest Retailer
-
$1,141 CAD
£643 GBP
A
Retailer 2
-
$1,257 CAD
$900 USD
View
B+
Retailer 3
-
$1,630 CAD
$1,167 USD
View
B+
Retailer 4
-
$1,651 CAD
$1,182 USD
View
B+
Retailer 5
-
$2,678 CAD
$1,917 USD
View
B
Retailer 6
-
$4,005 CAD
$2,867 USD
View
B
Retailer 7
-
$4,252 CAD
£2,397 GBP
View
B
Retailer 8
-
$4,455 CAD
$3,189 USD
View
Most Expensive
B
Brilliant Earth
22319408A · Oct 31
$5,364 CAD
$3,840 USD
View
8 more retailers have this diamond
Prices start from $1,141 CADSave up to $4,223 CAD

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
1.51ct Heart
$1,141 CAD