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Cushion|Lab Grown|IGI

1.51ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG751506379

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

Certificate IGI LG751506379

Diamond specifications and retailer prices

From $370 USD
As of November 4, 2026
Save $2,570 USD (87%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,940 USD at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

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 LG751506379 or 751506379. Listed at 20 retailers as of November 4, 2026, with prices from $370 to $2,940, a $2,570 spread on the same certified stone. Do Amore Diamonds lists it at $2,940. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG751506379
Dimensions6.85 × 6.69 × 4.34 mm
L/W Ratio1.02
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
6.85 mm6.69 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG751506379
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 64.9%

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: $2,940 USD|Low: $370 USD|High: $3,940 USD|Avg: $1,582 USD
Do Amore Diamonds
Retailer 2
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Retailer 18
November 5, 2026
Retailer 8$370 USD
Retailer 12$565 USD
Retailer 17$576 USD
Retailer 15$590 USD
Retailer 4$667 USD
Retailer 13$781 USD
Retailer 3$796 USD
Retailer 2$810 USD
Retailer 11$1,056 USD
Retailer 6$1,550 USD
Retailer 5$1,606 USD
Retailer 10$1,613 USD
Retailer 9$1,651 USD
Retailer 7$1,767 USD
Retailer 14$1,770 USD
Retailer 18$2,500 USD
Retailer 16$2,830 USD
Do Amore Diamonds$2,940 USD

43 data points across 18 retailers

20 retailers$370 USD to $2,940 USD

A
Cheapest Retailer
-
$370 USD
Final sale: no returns
A
Retailer 2
-
$565 USD
View
A
Retailer 3
-
$576 USD
View
A
Retailer 4
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$590 USD
View
A
Retailer 5
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$667 USD
View
A
Retailer 6
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$781 USD
View
A
Retailer 7
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$796 USD
View
A
Retailer 8
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$810 USD
View
A
Retailer 9
-
$1,056 USD
View
B+
Retailer 10
-
$1,536 USD
View
Retailer 11
-
$1,550 USD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$1,606 USD
View
B+
Retailer 13
-
$1,613 USD
View
B+
Retailer 14
-
$1,651 USD
View
B+
Retailer 15
-
$1,767 USD
View
B+
Retailer 16
-
$1,770 USD
View
Retailer 17
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$2,500 USD
View
Price last confirmed 17 days ago
B
Retailer 18
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$2,830 USD
View
Retailer 19
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$2,844 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Do Amore Diamonds
27-3ED74AAD0 · Nov 4
$2,940 USD
View
19 more retailers have this diamond
Prices start from $370 USDSave up to $2,570 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
$370 USD