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Cushion|Lab Grown|IGI

1.26ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG786601826

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

Certificate IGI LG786601826

Diamond specifications and retailer prices

From £166 GBP
$223 USD
As of October 31, 2026
Save £834 GBP (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,000 GBP at Brilliant Earth · As of October 28, 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 D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG786601826 or 786601826. Listed at 15 retailers as of October 28, 2026, with prices from £166 to £1,000, a £834 spread on the same certified stone. Brilliant Earth lists it at £1,000. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.26
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786601826
Dimensions6.34 × 6.28 × 4.17 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.34 mm6.28 mm1.26 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786601826
Side View
Table 60.0%Crown 36.3°Girdle: MED-THKPavilion 39.1°Culet: NoneDepth 66.4%

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 31
Current: £1,000 GBP|Low: £160 GBP|High: £1,000 GBP|Avg: £461 GBP|+15.5%
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
Retailer 16
Retailer 17
October 31, 2026
Retailer 2£166 GBP
Retailer 6£184 GBP
Retailer 15£247 GBP
Retailer 7£282 GBP
Retailer 17£299 GBP
Retailer 13£319 GBP
Retailer 10£337 GBP
Retailer 11£371 GBP
Retailer 12£424 GBP
Retailer 9£448 GBP
Retailer 5£451 GBP
Retailer 4£541 GBP
Retailer 8£560 GBP
Retailer 16£632 GBP
Retailer 3£834 GBP
Retailer 14£888 GBP
Brilliant Earth£1,000 GBP

17 data points across 17 retailers

15 retailers£166 GBP to £1,000 GBP

A
Cheapest Retailer
-
£166 GBP
$223 USD
Final sale: no returns
A
Retailer 2
-
£184 GBP
$247 USD
View
A
Retailer 3
-
£247 GBP
View
A
Retailer 4
-
£299 GBP
€381 EUR
View
A
Retailer 5
-
£319 GBP
$428 USD
View
A
Retailer 6
-
£337 GBP
View
A
Retailer 7
-
£371 GBP
$497 USD
View
A
Retailer 8
-
£424 GBP
$568 USD
View
Retailer 9
-
£451 GBP
A$929 AUD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
£541 GBP
$725 USD
View
Retailer 11
-
£560 GBP
A$1,155 AUD
View
Price last confirmed 73 days ago
B+
Retailer 12
-
£632 GBP
$846 USD
View
B
Retailer 13
-
£834 GBP
View
B
Retailer 14
-
£888 GBP
$1,190 USD
View
Most Expensive
B
Brilliant Earth
18700468A · Oct 28
£1,000 GBP
$1,340 USD
View
14 more retailers have this diamond
Prices start from £166 GBPSave up to £834 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
£166 GBP