Cushion|Lab Grown|IGI

1.51ct F VVS1 Cushion Lab Grown Diamond

EX • F/VVS1 • IGI LG820605268

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

Certificate IGI LG820605268

Diamond specifications and retailer prices

From $303 USD
As of November 4, 2026
Save $1,607 USD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,910 USD at Brilliant Earth · As of November 4, 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 F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG820605268 or 820605268. Listed at 16 retailers as of November 4, 2026, with prices from $303 to $1,910, a $1,607 spread on the same certified stone. Brilliant Earth lists it at $1,910. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
F
Color
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG820605268
Dimensions6.72 × 6.65 × 4.45 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.72 mm6.65 mm1.51 ctF / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG820605268
Side View
Table 61.0%Crown 36.7°Girdle: MED-THKPavilion 39.6°Culet: NoneDepth 66.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $1,910 USD|Low: $252 USD|High: $1,910 USD|Avg: $821 USD|+1.6%
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 5, 2026
Retailer 10$303 USD
Retailer 11$307 USD
Retailer 16$469 USD
Retailer 4$486 USD
Retailer 14$496 USD
Retailer 2$536 USD
Retailer 3$616 USD
Retailer 12$671 USD
Retailer 13$779 USD
Retailer 7$976 USD
Retailer 8$1,129 USD
Retailer 9$1,149 USD
Retailer 5$1,170 USD
Retailer 6$1,295 USD
Retailer 15$1,340 USD
Brilliant Earth$1,910 USD

22 data points across 16 retailers

16 retailers$303 USD to $1,910 USD

A
Cheapest Retailer
-
$303 USD
A
Retailer 2
-
$307 USD
View
Final sale: no returns
A
Retailer 3
-
$469 USD
View
A
Retailer 4
-
$486 USD
View
A
Retailer 5
-
$496 USD
View
A
Retailer 6
-
$536 USD
View
A
Retailer 7
-
$616 USD
View
A
Retailer 8
-
$671 USD
View
B+
Retailer 9
-
$779 USD
View
B+
Retailer 10
-
$976 USD
View
B
Retailer 11
-
$1,129 USD
View
B+
Retailer 12
-
$1,149 USD
View
B+
Retailer 13
-
$1,170 USD
View
B
Retailer 14
-
$1,295 USD
View
B
Retailer 15
-
$1,340 USD
View
Most Expensive
B
Brilliant Earth
20897430A · Nov 4
$1,910 USD
View
15 more retailers have this diamond
Prices start from $303 USDSave up to $1,607 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
$303 USD