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Heart|Lab Grown|IGI

1.42ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG816614783

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG816614783

Diamond specifications and retailer prices

From $529 AUD
As of November 4, 2026
Save $3,691 AUD (87%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,229 AUD at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 1.42ct lab-grown heart diamond

This 1.42ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816614783 or 816614783. Listed at 18 retailers as of November 4, 2026, with a 698% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.42
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816614783
Dimensions7.78 × 6.97 × 4.46 mm
L/W Ratio1.12
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
7.78 mm6.97 mm1.42 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816614783
Side View
Table 58.0%Crown 34.2°Girdle: STK-THKPavilion 38.6°Culet: NoneDepth 57.3%

Caratlytics Score

How it works →
A+
Exceptional
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 4
Current: $4,219 AUD|Low: $529 AUD|High: $4,219 AUD|Avg: $1,520 AUD
Brilliant Earth
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
Retailer 17
November 5, 2026
Retailer 6$529 AUD
Retailer 3$590 AUD
Retailer 12$613 AUD
Retailer 17$656 AUD
Retailer 9$694 AUD
Retailer 13$870 AUD
Retailer 11$1,048 AUD
Retailer 2$1,172 AUD
Retailer 7$1,196 AUD
Retailer 14$1,514 AUD
Retailer 15$1,658 AUD
Retailer 10$2,108 AUD
Retailer 16$2,164 AUD
Retailer 4$2,279 AUD
Retailer 5$2,629 AUD
Retailer 8$2,713 AUD
Brilliant Earth$4,219 AUD

29 data points across 17 retailers

18 retailers$529 AUD to $4,219 AUD

A+
Cheapest Retailer
-
$529 AUD
A
Retailer 2
-
$590 AUD
View
Final sale: no returns
A
Retailer 3
-
$613 AUD
View
A
Retailer 4
-
$656 AUD
View
Retailer 5
-
$694 AUD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$870 AUD
View
A
Retailer 7
-
$1,048 AUD
View
A
Retailer 8
-
$1,172 AUD
View
A
Retailer 9
-
$1,196 AUD
View
B+
Retailer 10
-
$1,514 AUD
View
B+
Retailer 11
-
$1,658 AUD
View
B+
Retailer 12
-
$2,108 AUD
View
B+
Retailer 13
-
$2,164 AUD
View
B+
Retailer 14
-
$2,279 AUD
View
B+
Retailer 15
-
$2,629 AUD
View
B+
Retailer 16
-
$2,713 AUD
View
B
Retailer 17
-
$4,219 AUD
View
Most Expensive
Brilliant Earth
21094848A · Sep 28
$6,229 AUD
$4,370 USD
View
Price last confirmed 37 days ago
17 more retailers have this diamond
Prices start from $529 AUDSave up to $3,691 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+
1.42ct Heart
$529 AUD