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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 $289 USD
As of October 30, 2026
Save $2,511 USD (90%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,800 USD at Brilliant Earth · As of October 31, 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 12 retailers as of October 30, 2026, with prices from $289 to $2,800, a $2,511 spread on the same certified stone. Brilliant Earth lists it at $2,800. 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
Color
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

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $2,800 USD|Low: $289 USD|High: $3,330 USD|Avg: $1,263 USD|-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
Retailer 17
October 30, 2026
Retailer 3$289 USD
Retailer 15$335 USD
Retailer 4$382 USD
Retailer 11$570 USD
Retailer 14$588 USD
Retailer 13$619 USD
Retailer 6$779 USD
Retailer 7$842 USD
Retailer 10$921 USD
Retailer 12$975 USD
Retailer 17$1,270 USD
Retailer 9$1,409 USD
Retailer 2$1,591 USD
Retailer 8$1,630 USD
Retailer 5$1,665 USD
Retailer 16$2,560 USD
Brilliant Earth$2,800 USD

26 data points across 17 retailers

12 retailers$289 USD to $2,800 USD

A
Cheapest Retailer
-
$289 USD
A
Retailer 2
-
$335 USD
View
A
Retailer 3
-
$382 USD
View
Final sale: no returns
A
Retailer 4
-
$570 USD
View
A
Retailer 5
-
$588 USD
View
A
Retailer 6
-
$619 USD
View
A
Retailer 7
-
$921 USD
A$1,417 AUD
View
A
Retailer 8
-
$975 USD
View
B+
Retailer 9
-
$1,270 USD
View
B+
Retailer 10
-
$1,591 USD
£1,253 GBP
View
B
Retailer 11
-
$2,560 USD
View
Most Expensive
B
Brilliant Earth
21415803Y · Oct 31
$2,800 USD
View
11 more retailers have this diamond
Prices start from $289 USDSave up to $2,511 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
1.54ct Heart
$289 USD