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Cushion|Lab Grown|IGI

1.51ct G VS1 Cushion Lab Grown Diamond

VG • G/VS1 • IGI LG766657558

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

Certificate IGI LG766657558

Diamond specifications and retailer prices

From $322 USD
As of October 28, 2026
Save $858 USD (73%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,180 USD at Brilliant Earth · As of October 29, 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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG766657558 or 766657558. Listed at 16 retailers as of October 28, 2026, with prices from $322 to $1,180, a $858 spread on the same certified stone. Brilliant Earth lists it at $1,180. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
G
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle32.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG766657558
Dimensions6.70 × 6.38 × 3.91 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.70 mm6.38 mm1.51 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG766657558
Side View
Table 68.0%Crown 37.8°Girdle: THK-VTKPavilion 32.6°Culet: NoneDepth 61.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: $1,180 USD|Low: $241 USD|High: $1,290 USD|Avg: $656 USD|-8.5%
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
October 29, 2026
Retailer 7$241 USD
Retailer 11$322 USD
Retailer 8$402 USD
Retailer 12$409 USD
Retailer 2$433 USD
Retailer 14$471 USD
Retailer 10$496 USD
Retailer 4$562 USD
Retailer 6$620 USD
Retailer 3$820 USD
Retailer 5$900 USD
Retailer 13$930 USD
Retailer 15$990 USD
Retailer 9$1,120 USD
Brilliant Earth$1,180 USD

41 data points across 15 retailers

16 retailers$322 USD to $1,180 USD

Retailer 1
-
$241 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
$322 USD
View
A
Retailer 3
-
$402 USD
€383 EUR
View
A
Retailer 4
-
$409 USD
ZAR 6,610 ZAR
View
A
Retailer 5
-
$433 USD
£341 GBP
View
A
Retailer 6
-
$471 USD
View
A
Retailer 7
-
$496 USD
View
A
Retailer 8
-
$562 USD
A$865 AUD
View
Retailer 9
-
$620 USD
View
Price last confirmed 7 days ago
B
Retailer 10
-
$820 USD
View
Retailer 11
-
$900 USD
View
Price last confirmed 14 days ago
B
Retailer 12
-
$930 USD
£732 GBP
View
B
Retailer 13
-
$957 USD
View
B
Retailer 14
-
$990 USD
View
B
Retailer 15
-
$1,120 USD
£882 GBP
View
Most Expensive
B
Brilliant Earth
18645848A · Oct 29
$1,180 USD
View
15 more retailers have this diamond
Prices start from $322 USDSave up to $858 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
$322 USD