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Cushion|Lab Grown|IGI

1.54ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG816673339

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG816673339

Diamond specifications and retailer prices

From $787 AUD
As of November 4, 2026
Save $2,841 AUD (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,572 AUD at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 1.54ct lab-grown cushion diamond

This 1.54ct lab-grown cushion 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 LG816673339 or 816673339. Listed at 16 retailers as of November 4, 2026, with a 361% 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

1.54
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816673339
Dimensions6.81 × 6.63 × 4.36 mm
L/W Ratio1.03
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
6.81 mm6.63 mm1.54 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816673339
Side View
Table 61.0%Crown 36.7°Girdle: STK-VTKPavilion 37.9°Culet: NoneDepth 65.8%

Caratlytics Score

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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: $3,628 AUD|Low: $787 AUD|High: $3,679 AUD|Avg: $2,099 AUD|-0.2%
Retailer 1
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
November 5, 2026
Retailer 14$787 AUD
Retailer 8$918 AUD
Retailer 13$1,048 AUD
Retailer 4$1,205 AUD
Retailer 9$1,304 AUD
Retailer 7$1,434 AUD
Retailer 10$1,502 AUD
Retailer 5$1,584 AUD
Retailer 12$2,028 AUD
Retailer 6$2,838 AUD
Retailer 3$3,033 AUD
Retailer 2$3,259 AUD
Retailer 11$3,525 AUD
Retailer 1$3,628 AUD

43 data points across 14 retailers

16 retailers$787 AUD to $3,628 AUD

A
Cheapest Retailer
-
$787 AUD
Final sale: no returns
A
Retailer 2
-
$918 AUD
View
A
Retailer 3
-
$1,048 AUD
View
A
Retailer 4
-
$1,169 AUD
View
A
Retailer 5
-
$1,205 AUD
View
A
Retailer 6
-
$1,304 AUD
View
A
Retailer 7
-
$1,434 AUD
View
A
Retailer 8
-
$1,502 AUD
View
A
Retailer 9
-
$1,584 AUD
View
A
Retailer 10
-
$2,028 AUD
View
B+
Retailer 11
-
$2,838 AUD
View
B+
Retailer 12
-
$3,033 AUD
View
B+
Retailer 13
-
$3,259 AUD
View
B+
Retailer 14
-
$3,525 AUD
View
B+
Retailer 15
-
$3,628 AUD
View
Most Expensive
Brilliant Earth
20907181A · Sep 28
$6,572 AUD
$4,610 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from $787 AUDSave up to $2,841 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 Cushion
$787 AUD