Cushion|Lab Grown|IGI

1.26ct E VVS1 Cushion Lab Grown Diamond

ID • E/VVS1 • IGI LG830620551

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

Certificate IGI LG830620551

Diamond specifications and retailer prices

From £238 GBP
As of October 27, 2026
Save £598 GBP (72%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £836 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 1.26ct lab-grown cushion diamond

This 1.26ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG830620551 or 830620551. Listed at 9 retailers as of October 26, 2026, with prices from £238 to £836, a £598 spread on the same certified stone. Brilliant Earth lists it at £836. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.26
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830620551
Dimensions6.32 × 6.28 × 4.08 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.32 mm6.28 mm1.26 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830620551
Side View
Table 62.0%Crown 38°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 65.0%

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 27
Current: £446 GBP|Low: £238 GBP|High: £662 GBP|Avg: £511 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 27, 2026
Retailer 5£238 GBP
Retailer 2£325 GBP
Retailer 6£355 GBP
Retailer 1£446 GBP
Retailer 3£473 GBP
Retailer 4£629 GBP
Retailer 7£659 GBP
Retailer 8£662 GBP

2 data points across 8 retailers

9 retailers£238 GBP to £836 GBP

A
Cheapest Retailer
-
£238 GBP
A
Retailer 2
-
£325 GBP
€415 EUR
View
A
Retailer 3
-
£355 GBP
View
A
Retailer 4
-
£446 GBP
$598 USD
View
B+
Retailer 5
-
£473 GBP
A$976 AUD
View
B+
Retailer 6
-
£629 GBP
SGD 1,139 SGD
View
B+
Retailer 7
-
£659 GBP
$883 USD
View
B+
Retailer 8
-
£662 GBP
$887 USD
View
Most Expensive
B
Brilliant Earth
22310899A · Oct 26
£836 GBP
$1,120 USD
View
8 more retailers have this diamond
Prices start from £238 GBPSave up to £598 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
1.26ct Cushion
£238 GBP