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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 $996 AUD
$698 USD
As of November 1, 2026
Save $4,483 AUD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,479 AUD at Brilliant Earth · As of November 2, 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 10 retailers as of November 1, 2026, with prices from $996 to $5,479, a $4,483 spread on the same certified stone. Brilliant Earth lists it at $5,479. 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
Colour
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: $5,479 AUD|Low: $996 AUD|High: $6,906 AUD|Avg: $2,953 AUD|-20.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3$996 AUD
Retailer 2$1,165 AUD
Retailer 6$1,284 AUD
Retailer 8$1,665 AUD
Retailer 10$1,687 AUD
Retailer 5$2,735 AUD
Retailer 7$4,091 AUD
Retailer 4$4,344 AUD
Retailer 9$4,550 AUD
Brilliant Earth$5,479 AUD

8 data points across 10 retailers

10 retailers$996 AUD to $5,479 AUD

A
Cheapest Retailer
-
$996 AUD
$698 USD
A
Retailer 2
-
$1,165 AUD
£643 GBP
View
A
Retailer 3
-
$1,284 AUD
$900 USD
View
B+
Retailer 4
-
$1,665 AUD
$1,167 USD
View
B+
Retailer 5
-
$1,687 AUD
$1,182 USD
View
B+
Retailer 6
-
$2,735 AUD
$1,917 USD
View
B
Retailer 7
-
$4,091 AUD
$2,867 USD
View
B
Retailer 8
-
$4,344 AUD
£2,397 GBP
View
B
Retailer 9
-
$4,550 AUD
$3,189 USD
View
Most Expensive
B
Brilliant Earth
22319408A · Nov 2
$5,479 AUD
$3,840 USD
View
9 more retailers have this diamond
Prices start from $996 AUDSave up to $4,483 AUD

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
$996 AUD