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Cushion|Lab Grown|IGI

1.26ct H VS1 Cushion Lab Grown Diamond

GD • H/VS1 • IGI LG579399936

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG579399936

Diamond specifications and retailer prices

From £193 GBP
As of November 4, 2026
Save £1,289 GBP (87%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,482 GBP at Michael Trio · As of November 3, 2026
View at Michael Trio

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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG579399936 or 579399936. Listed at 6 retailers as of November 3, 2026, with prices from £193 to £1,482, a £1,289 spread on the same certified stone. Michael Trio lists it at £1,482. 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

1.26
Carat
H
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG579399936
Dimensions6.28 × 6.17 × 4.11 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.28 mm6.17 mm1.26 ctH / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG579399936
Side View
Table 63.0%Crown 37.1°Girdle: MED-THKPavilion 38.2°Culet: NoneDepth 66.6%

Caratlytics Score

How it works →
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: Nov 4
Current: £1,482 GBP|Low: £193 GBP|High: £1,482 GBP|Avg: £554 GBP|+63.0%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 6£193 GBP
Retailer 3£323 GBP
Retailer 4£489 GBP
Retailer 2£500 GBP
Retailer 5£512 GBP
Michael Trio£1,482 GBP

5 data points across 6 retailers

6 retailers£193 GBP to £1,482 GBP

A
Cheapest Retailer
-
£193 GBP
Final sale: no returns
B+
Retailer 2
-
£323 GBP
View
B+
Retailer 3
-
£489 GBP
View
B+
Retailer 4
-
£500 GBP
View
B+
Retailer 5
-
£512 GBP
View
Most Expensive
C
Michael Trio
2083840577 · Nov 3
£1,482 GBP
SGD 2,703 SGD
View
5 more retailers have this diamond
Prices start from £193 GBPSave up to £1,289 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
£193 GBP