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Heart|Lab Grown|IGI

1.54ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG745505078

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG745505078

Diamond specifications and retailer prices

From $410 AUD
As of November 4, 2026
Save $3,590 AUD (90%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,000 AUD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.54ct lab-grown heart diamond

This 1.54ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG745505078 or 745505078. Listed at 13 retailers as of November 4, 2026, with prices from $410 to $4,000, a $3,590 spread on the same certified stone. Brilliant Earth lists it at $4,000. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG745505078
Dimensions8.20 × 7.03 × 4.50 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
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
8.20 mm7.03 mm1.54 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG745505078
Side View
Table 60.0%Crown 35.1°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 54.9%

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 4
Current: $4,000 AUD|Low: $410 AUD|High: $4,757 AUD|Avg: $1,747 AUD|-14.9%
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
November 5, 2026
Retailer 13$410 AUD
Retailer 9$464 AUD
Retailer 4$474 AUD
Retailer 2$646 AUD
Retailer 5$814 AUD
Retailer 16$834 AUD
Retailer 6$884 AUD
Retailer 8$1,111 AUD
Retailer 3$1,316 AUD
Retailer 15$1,393 AUD
Retailer 14$1,801 AUD
Retailer 11$1,986 AUD
Retailer 12$2,238 AUD
Retailer 7$2,377 AUD
Retailer 10$3,628 AUD
Brilliant Earth$4,000 AUD

28 data points across 16 retailers

13 retailers$410 AUD to $4,000 AUD

A
Cheapest Retailer
-
$410 AUD
A
Retailer 2
-
$464 AUD
View
Final sale: no returns
A
Retailer 3
-
$474 AUD
View
A
Retailer 4
-
$646 AUD
View
A
Retailer 5
-
$814 AUD
View
A
Retailer 6
-
$834 AUD
View
A
Retailer 7
-
$884 AUD
View
A
Retailer 8
-
$1,316 AUD
View
A
Retailer 9
-
$1,393 AUD
View
B+
Retailer 10
-
$1,801 AUD
View
B+
Retailer 11
-
$2,238 AUD
View
B
Retailer 12
-
$3,628 AUD
View
Most Expensive
B
Brilliant Earth
21415803Y · Nov 4
$4,000 AUD
$2,800 USD
View
12 more retailers have this diamond
Prices start from $410 AUDSave up to $3,590 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
1.54ct Heart
$410 AUD