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Cushion|Lab Grown|IGI

1.51ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG741524338

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG741524338

Diamond specifications and retailer prices

From $664 AUD
As of November 4, 2026
Save $3,398 AUD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,063 AUD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.51ct lab-grown cushion diamond

This 1.51ct 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 LG741524338 or 741524338. Listed at 20 retailers as of November 4, 2026, with prices from $664 to $4,063, a $3,398 spread on the same certified stone. Brilliant Earth lists it at $4,063. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG741524338
Dimensions7.50 × 6.25 × 4.15 mm
L/W Ratio1.20
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
7.50 mm6.25 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG741524338
Side View
Table 59.0%Crown 37.8°Girdle: THN-STKPavilion 36.7°Culet: NoneDepth 66.4%

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: $4,063 AUD|Low: $664 AUD|High: $5,103 AUD|Avg: $2,095 AUD|-20.4%
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
Retailer 18
Retailer 19
Retailer 20
November 5, 2026
Retailer 17$664 AUD
Retailer 18$827 AUD
Retailer 20$857 AUD
Retailer 3$1,041 AUD
Retailer 19$1,081 AUD
Retailer 16$1,179 AUD
Retailer 2$1,193 AUD
Retailer 15$1,270 AUD
Retailer 5$1,497 AUD
Retailer 8$1,703 AUD
Retailer 14$1,718 AUD
Retailer 10$2,416 AUD
Retailer 7$2,462 AUD
Retailer 9$2,517 AUD
Retailer 4$2,687 AUD
Retailer 13$2,698 AUD
Retailer 6$2,758 AUD
Retailer 12$3,495 AUD
Retailer 11$3,692 AUD
Brilliant Earth$4,063 AUD

37 data points across 20 retailers

20 retailers$664 AUD to $4,063 AUD

A
Cheapest Retailer
-
$664 AUD
Final sale: no returns
A
Retailer 2
-
$827 AUD
View
A
Retailer 3
-
$857 AUD
View
A
Retailer 4
-
$1,041 AUD
View
A
Retailer 5
-
$1,081 AUD
View
A
Retailer 6
-
$1,179 AUD
View
A
Retailer 7
-
$1,193 AUD
View
A
Retailer 8
-
$1,270 AUD
View
A
Retailer 9
-
$1,497 AUD
View
A
Retailer 10
-
$1,703 AUD
View
A
Retailer 11
-
$1,718 AUD
View
B+
Retailer 12
-
$2,416 AUD
View
B+
Retailer 13
-
$2,462 AUD
View
B+
Retailer 14
-
$2,517 AUD
View
B+
Retailer 15
-
$2,687 AUD
View
B+
Retailer 16
-
$2,698 AUD
View
B+
Retailer 17
-
$2,758 AUD
View
Retailer 18
-
$3,495 AUD
View
Price last confirmed 28 days ago
Retailer 19
-
$3,692 AUD
View
Price last confirmed 17 days ago
Most Expensive
B
Brilliant Earth
16164004A · Nov 4
$4,063 AUD
$2,850 USD
View
19 more retailers have this diamond
Prices start from $664 AUDSave up to $3,398 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
1.51ct Cushion
$664 AUD