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Cushion|Lab Grown|IGI

1.51ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG825661104

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG825661104

Diamond specifications and retailer prices

From $471 USD
£371 GBP
As of November 2, 2026
Save $2,379 USD (83%) vs most expensive(unlock to see where)
17 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 LG825661104 or 825661104. Listed at 17 retailers as of November 2, 2026, with prices from $471 to $2,850, a $2,379 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 angle34°
Pavilion angle32.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825661104
Dimensions8.63 × 5.81 × 3.73 mm
L/W Ratio1.49
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
8.63 mm5.81 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825661104
Side View
Table 60.0%Crown 34°Girdle: STK-THKPavilion 32.9°Culet: NoneDepth 64.2%

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 2
Current: $2,850 USD|Low: $445 USD|High: $3,370 USD|Avg: $1,242 USD|-15.4%
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
November 3, 2026
Retailer 4$445 USD
Retailer 10$471 USD
Retailer 3$675 USD
Retailer 7$713 USD
Retailer 11$768 USD
Retailer 2$802 USD
Retailer 13$894 USD
Retailer 6$1,029 USD
Retailer 14$1,034 USD
Retailer 9$1,122 USD
Retailer 5$1,472 USD
Retailer 12$1,740 USD
Retailer 8$2,038 USD
Retailer 15$2,625 USD
Brilliant Earth$2,850 USD

33 data points across 15 retailers

17 retailers$471 USD to $2,850 USD

Retailer 1
-
$445 USD
Price last confirmed 9 days ago
A
Retailer 2
-
$471 USD
£371 GBP
View
A
Retailer 3
-
$675 USD
View
A
Retailer 4
-
$713 USD
View
A
Retailer 5
-
$768 USD
ZAR 12,403 ZAR
View
A
Retailer 6
-
$802 USD
£632 GBP
View
A
Retailer 7
-
$894 USD
€851 EUR
View
A
Retailer 8
-
$1,029 USD
View
A
Retailer 9
-
$1,034 USD
A$1,590 AUD
View
A
Retailer 10
-
$1,122 USD
View
B+
Retailer 11
-
$1,472 USD
View
B+
Retailer 12
-
$1,740 USD
£1,370 GBP
View
B+
Retailer 13
-
$1,855 USD
SGD 2,507 SGD
View
B+
Retailer 14
-
$2,038 USD
View
B
Retailer 15
-
$2,525 USD
View
Retailer 16
-
$2,625 USD
View
Price last confirmed 15 days ago
Most Expensive
B
Brilliant Earth
21612279A · Nov 3
$2,850 USD
View
16 more retailers have this diamond
Prices start from $471 USDSave up to $2,379 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
$471 USD