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Marquise|Lab Grown|IGI

1.54ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG788621215

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG788621215

Diamond specifications and retailer prices

From $1,542 AUD
As of November 4, 2026
Save $4,887 AUD (76%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $6,429 AUD at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.54ct lab-grown marquise diamond

This 1.54ct lab-grown marquise 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 LG788621215 or 788621215. Listed at 28 retailers as of November 3, 2026, with prices from $1,542 to $6,429, a $4,887 spread on the same certified stone. Brilliant Earth lists it at $6,429. 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 angle33.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788621215
Dimensions11.99 × 6.09 × 3.82 mm
L/W Ratio1.97
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
11.99 mm6.09 mm1.54 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788621215
Side View
Table 56.0%Crown 33.7°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.7%

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: $6,429 AUD|Low: $1,377 AUD|High: $6,429 AUD|Avg: $3,389 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
November 4, 2026
Retailer 5$1,377 AUD
Retailer 2$1,802 AUD
Retailer 8$1,846 AUD
Retailer 10$2,277 AUD
Retailer 7$2,439 AUD
Retailer 13$2,855 AUD
Retailer 9$2,939 AUD
Retailer 6$3,444 AUD
Retailer 4$3,785 AUD
Retailer 11$3,979 AUD
Retailer 12$5,391 AUD
Retailer 3$5,448 AUD
Brilliant Earth$6,429 AUD

33 data points across 13 retailers

28 retailers$1,542 AUD to $6,429 AUD

Retailer 1
-
$1,377 AUD
Price last confirmed 27 days ago
Retailer 2
-
$1,500 AUD
View
Price last confirmed 20 days ago
A
Retailer 3
-
$1,542 AUD
View
Final sale: no returns
Retailer 4
-
$1,598 AUD
View
Price last confirmed 32 days ago
Retailer 5
-
$1,598 AUD
View
Price last confirmed 23 days ago
A
Retailer 6
-
$1,802 AUD
View
A
Retailer 7
-
$1,813 AUD
View
A
Retailer 8
-
$1,846 AUD
View
A
Retailer 9
-
$1,894 AUD
View
A
Retailer 10
-
$2,277 AUD
View
A
Retailer 11
-
$2,288 AUD
View
A
Retailer 12
-
$2,439 AUD
View
B+
Retailer 13
-
$2,855 AUD
View
B+
Retailer 14
-
$2,939 AUD
View
B+
Retailer 15
-
$3,176 AUD
View
B+
Retailer 16
-
$3,444 AUD
View
Retailer 17
-
$3,785 AUD
View
Price last confirmed 7 days ago
B
Retailer 18
-
$3,979 AUD
View
B
Retailer 19
-
$4,409 AUD
View
Retailer 20
-
$4,493 AUD
View
Price last confirmed 35 days ago
B
Retailer 21
-
$4,751 AUD
View
B
Retailer 22
-
$4,955 AUD
View
B
Retailer 23
-
$5,187 AUD
View
B
Retailer 24
-
$5,363 AUD
View
B
Retailer 25
-
$5,391 AUD
View
B
Retailer 26
-
$5,448 AUD
View
B
Retailer 27
-
$5,564 AUD
View
Most Expensive
B
Brilliant Earth
20086108A · Nov 3
$6,429 AUD
$4,510 USD
View
27 more retailers have this diamond
Prices start from $1,542 AUDSave up to $4,887 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 Marquise
$1,542 AUD