Cushion|Lab Grown|IGI

1.51ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG789604663

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

Certificate IGI LG789604663

Diamond specifications and retailer prices

From $273 USD
As of October 30, 2026
Save $1,064 USD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,150 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG789604663 or 789604663. Listed at 18 retailers as of October 30, 2026, with a 390% 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
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789604663
Dimensions6.60 × 6.51 × 4.36 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.60 mm6.51 mm1.51 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789604663
Side View
Table 61.0%Crown 33.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 67.0%

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: Oct 30
Current: $2,150 USD|Low: $273 USD|High: $2,150 USD|Avg: $739 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
Retailer 17
Retailer 18
October 30, 2026
Retailer 4$273 USD
Retailer 10$310 USD
Retailer 17$340 USD
Retailer 12$500 USD
Retailer 2$511 USD
Retailer 13$522 USD
Retailer 18$526 USD
Retailer 7$530 USD
Retailer 11$576 USD
Retailer 3$629 USD
Retailer 14$708 USD
Retailer 16$763 USD
Retailer 6$983 USD
Retailer 9$1,028 USD
Retailer 8$1,195 USD
Retailer 15$1,218 USD
Retailer 5$1,337 USD
Brilliant Earth$2,150 USD

41 data points across 18 retailers

18 retailers$273 USD to $1,337 USD

A
Cheapest Retailer
-
$273 USD
Final sale: no returns
Retailer 2
-
$310 USD
View
Price last confirmed 22 days ago
Retailer 3
-
$340 USD
£268 GBP
View
Price last confirmed 13 days ago
A
Retailer 4
-
$500 USD
€476 EUR
View
A
Retailer 5
-
$511 USD
View
A
Retailer 6
-
$522 USD
ZAR 8,427 ZAR
View
A
Retailer 7
-
$526 USD
View
A
Retailer 8
-
$576 USD
£454 GBP
View
B+
Retailer 9
-
$629 USD
View
B+
Retailer 10
-
$708 USD
A$1,089 AUD
View
B+
Retailer 11
-
$763 USD
View
B+
Retailer 12
-
$983 USD
SGD 1,328 SGD
View
B
Retailer 13
-
$1,028 USD
View
Retailer 14
-
$1,111 USD
View
Price last confirmed 51 days ago
B
Retailer 15
-
$1,195 USD
View
B
Retailer 16
-
$1,218 USD
£959 GBP
View
B
Retailer 17
-
$1,337 USD
View
Most Expensive
Brilliant Earth
19001927A · Oct 16
$2,150 USD
View
Price last confirmed 14 days ago
17 more retailers have this diamond
Prices start from $273 USDSave up to $1,064 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
$273 USD