Cushion|Lab Grown|IGI

1.51ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG837661802

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG837661802

Diamond specifications and retailer prices

From £267 GBP
As of October 28, 2026
Save £762 GBP (74%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,605 GBP 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 LG837661802 or 837661802. Listed at 19 retailers as of October 28, 2026, with a 285% 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
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.2°
Pavilion angle30.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837661802
Dimensions7.95 × 5.60 × 3.89 mm
L/W Ratio1.42
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.95 mm5.60 mm1.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837661802
Side View
Table 65.0%Crown 38.2°Girdle: MED-THKPavilion 30.4°Culet: NoneDepth 69.5%

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 28
Current: £1,605 GBP|Low: £215 GBP|High: £1,605 GBP|Avg: £611 GBP
Brilliant Earth
Retailer 2
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Retailer 20
October 31, 2026
Retailer 10£215 GBP
Retailer 5£267 GBP
Retailer 14£267 GBP
Retailer 4£322 GBP
Retailer 15£325 GBP
Retailer 2£394 GBP
Retailer 20£396 GBP
Retailer 13£411 GBP
Retailer 6£435 GBP
Retailer 16£454 GBP
Retailer 19£561 GBP
Retailer 3£603 GBP
Retailer 12£725 GBP
Retailer 8£768 GBP
Retailer 11£773 GBP
Retailer 9£807 GBP
Retailer 18£873 GBP
Retailer 17£959 GBP
Retailer 7£1,030 GBP
Brilliant Earth£1,605 GBP

26 data points across 20 retailers

19 retailers£267 GBP to £1,030 GBP

Retailer 1
-
£267 GBP
HK$2,800 HKD
Price last confirmed 16 days ago
A
Retailer 2
-
£267 GBP
View
B+
Retailer 3
-
£322 GBP
$432 USD
View
A
Retailer 4
-
£325 GBP
$435 USD
View
A
Retailer 5
-
£394 GBP
€503 EUR
View
A
Retailer 6
-
£396 GBP
$531 USD
View
A
Retailer 7
-
£411 GBP
ZAR 8,889 ZAR
View
A
Retailer 8
-
£435 GBP
$583 USD
View
A
Retailer 9
-
£454 GBP
View
B+
Retailer 10
-
£561 GBP
A$1,157 AUD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
£603 GBP
$808 USD
View
B+
Retailer 12
-
£740 GBP
$991 USD
View
B
Retailer 13
-
£768 GBP
A$1,584 AUD
View
B
Retailer 14
-
£773 GBP
SGD 1,399 SGD
View
B
Retailer 15
-
£807 GBP
$1,081 USD
View
B
Retailer 16
-
£873 GBP
$1,170 USD
View
B
Retailer 17
-
£959 GBP
View
B
Retailer 18
-
£1,030 GBP
$1,379 USD
View
Most Expensive
Brilliant Earth
21586794A · Oct 16
£1,605 GBP
$2,150 USD
View
Price last confirmed 15 days ago
18 more retailers have this diamond
Prices start from £267 GBPSave up to £762 GBP

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
£267 GBP