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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 $466 USD
As of November 3, 2026
Save $2,384 USD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,850 USD at Brilliant Earth · As of November 3, 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 3, 2026, with prices from $466 to $2,850, a $2,384 spread on the same certified stone. Brilliant Earth lists it at $2,850. 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
Color
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

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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 3
Current: $2,850 USD|Low: $466 USD|High: $3,580 USD|Avg: $1,509 USD|-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 3, 2026
Retailer 16$466 USD
Retailer 18$580 USD
Retailer 20$602 USD
Retailer 3$730 USD
Retailer 19$758 USD
Retailer 15$827 USD
Retailer 2$851 USD
Retailer 13$891 USD
Retailer 5$1,050 USD
Retailer 8$1,196 USD
Retailer 17$1,204 USD
Retailer 10$1,696 USD
Retailer 7$1,727 USD
Retailer 9$1,766 USD
Retailer 4$1,886 USD
Retailer 14$1,899 USD
Retailer 6$1,935 USD
Retailer 12$2,452 USD
Retailer 11$2,590 USD
Brilliant Earth$2,850 USD

36 data points across 20 retailers

20 retailers$466 USD to $2,850 USD

A
Cheapest Retailer
-
$466 USD
Final sale: no returns
A
Retailer 2
-
$580 USD
View
A
Retailer 3
-
$602 USD
HK$4,700 HKD
View
A
Retailer 4
-
$730 USD
View
A
Retailer 5
-
$758 USD
View
A
Retailer 6
-
$827 USD
€788 EUR
View
A
Retailer 7
-
$851 USD
£670 GBP
View
A
Retailer 8
-
$891 USD
ZAR 14,402 ZAR
View
A
Retailer 9
-
$1,050 USD
View
A
Retailer 10
-
$1,196 USD
View
A
Retailer 11
-
$1,204 USD
A$1,852 AUD
View
B+
Retailer 12
-
$1,696 USD
View
B+
Retailer 13
-
$1,727 USD
SGD 2,334 SGD
View
B+
Retailer 14
-
$1,766 USD
View
B+
Retailer 15
-
$1,886 USD
View
B+
Retailer 16
-
$1,899 USD
£1,495 GBP
View
B+
Retailer 17
-
$1,935 USD
View
Retailer 18
-
$2,452 USD
A$3,773 AUD
View
Price last confirmed 26 days ago
Retailer 19
-
$2,590 USD
View
Price last confirmed 15 days ago
Most Expensive
B
Brilliant Earth
16164004A · Nov 3
$2,850 USD
View
19 more retailers have this diamond
Prices start from $466 USDSave up to $2,384 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
1.51ct Cushion
$466 USD