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Cushion|Lab Grown|IGI

1.51ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG669468191

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG669468191

Diamond specifications and retailer prices

From $720 USD
As of November 3, 2026
Save $2,425 USD (77%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,400 USD at Brilliant Earth · As of October 16, 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 LG669468191 or 669468191. Listed at 17 retailers as of November 3, 2026, with a 337% 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

1.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.4°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG669468191
Dimensions7.98 × 5.85 × 4.05 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.98 mm5.85 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG669468191
Side View
Table 67.0%Crown 32.4°Girdle: THK-VTKPavilion 40°Culet: NoneDepth 69.2%

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 3
Current: $4,400 USD|Low: $720 USD|High: $4,400 USD|Avg: $1,833 USD
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
November 3, 2026
Retailer 6$720 USD
Retailer 16$746 USD
Retailer 13$830 USD
Retailer 4$899 USD
Retailer 15$1,145 USD
Retailer 2$1,181 USD
Retailer 12$1,238 USD
Retailer 10$1,371 USD
Retailer 9$1,812 USD
Retailer 5$2,316 USD
Retailer 8$2,575 USD
Retailer 3$2,586 USD
Retailer 7$2,608 USD
Retailer 14$2,740 USD
Retailer 11$3,145 USD
Brilliant Earth$4,400 USD

44 data points across 16 retailers

17 retailers$720 USD to $3,145 USD

A
Cheapest Retailer
-
$720 USD
Final sale: no returns
Retailer 2
-
$746 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
$830 USD
View
A
Retailer 4
-
$899 USD
View
A
Retailer 5
-
$1,145 USD
View
A
Retailer 6
-
$1,181 USD
£930 GBP
View
A
Retailer 7
-
$1,238 USD
€1,179 EUR
View
A
Retailer 8
-
$1,371 USD
ZAR 22,152 ZAR
View
B+
Retailer 9
-
$1,812 USD
View
B+
Retailer 10
-
$2,316 USD
£1,824 GBP
View
B
Retailer 11
-
$2,575 USD
View
B+
Retailer 12
-
$2,586 USD
View
B
Retailer 13
-
$2,608 USD
View
Retailer 14
-
$2,740 USD
View
Price last confirmed 15 days ago
B
Retailer 15
-
$2,846 USD
View
B
Retailer 16
-
$3,145 USD
£2,476 GBP
View
Most Expensive
Brilliant Earth
14065763A · Oct 16
$4,400 USD
View
Price last confirmed 18 days ago
16 more retailers have this diamond
Prices start from $720 USDSave up to $2,425 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
$720 USD