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Cushion|Lab Grown|IGI

1.51ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG830643286

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG830643286

Diamond specifications and retailer prices

From £217 GBP
As of October 27, 2026
Save £753 GBP (78%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £970 GBP at Brilliant Earth · As of October 31, 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 LG830643286 or 830643286. Listed at 19 retailers as of October 27, 2026, with prices from £217 to £970, a £753 spread on the same certified stone. Brilliant Earth lists it at £970. 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 angle34°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830643286
Dimensions7.70 × 5.91 × 3.81 mm
L/W Ratio1.30
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.70 mm5.91 mm1.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830643286
Side View
Table 62.0%Crown 34°Girdle: MED-STKPavilion 33.5°Culet: NoneDepth 64.5%

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 27
Current: £970 GBP|Low: £175 GBP|High: £1,261 GBP|Avg: £543 GBP|-23.1%
Brilliant Earth
Retailer 2
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October 31, 2026
Retailer 10£175 GBP
Retailer 16£217 GBP
Retailer 11£220 GBP
Retailer 2£313 GBP
Retailer 20£329 GBP
Retailer 4£334 GBP
Retailer 18£357 GBP
Retailer 6£384 GBP
Retailer 8£385 GBP
Retailer 17£455 GBP
Retailer 13£499 GBP
Retailer 15£625 GBP
Retailer 9£666 GBP
Retailer 12£758 GBP
Retailer 14£772 GBP
Retailer 19£781 GBP
Retailer 7£793 GBP
Retailer 3£813 GBP
Retailer 5£916 GBP
Brilliant Earth£970 GBP

32 data points across 20 retailers

19 retailers£217 GBP to £970 GBP

A
Cheapest Retailer
-
£217 GBP
A
Retailer 2
-
£220 GBP
HK$2,300 HKD
View
A
Retailer 3
-
£313 GBP
€400 EUR
View
Retailer 4
-
£329 GBP
ZAR 7,127 ZAR
View
Price last confirmed 9 days ago
Retailer 5
-
£334 GBP
$448 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
£357 GBP
View
A
Retailer 7
-
£384 GBP
$514 USD
View
A
Retailer 8
-
£385 GBP
$516 USD
View
A
Retailer 9
-
£455 GBP
A$937 AUD
View
B+
Retailer 10
-
£499 GBP
$668 USD
View
B+
Retailer 11
-
£625 GBP
SGD 1,131 SGD
View
B+
Retailer 12
-
£666 GBP
$892 USD
View
Retailer 13
-
£758 GBP
A$1,562 AUD
View
Price last confirmed 31 days ago
B
Retailer 14
-
£772 GBP
$1,034 USD
View
Retailer 15
-
£781 GBP
View
Price last confirmed 7 days ago
B
Retailer 16
-
£793 GBP
$1,063 USD
View
Retailer 17
-
£813 GBP
$1,090 USD
View
Price last confirmed 11 days ago
Retailer 18
-
£916 GBP
$1,227 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Brilliant Earth
21274481A · Oct 31
£970 GBP
$1,300 USD
View
18 more retailers have this diamond
Prices start from £217 GBPSave up to £753 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
£217 GBP