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Cushion|Lab Grown|IGI

3.09ct I VS1 Cushion Lab Grown Diamond

GD • I/VS1 • IGI LG534246826

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG534246826

Diamond specifications and retailer prices

From £2,474 GBP
$3,315 USD
As of October 28, 2026
3 retailers carry this diamond
Most expensive: £11,761 GBP at The Diamond Guys · As of October 28, 2026
View at The Diamond Guys

About this 3.09ct lab-grown cushion diamond

This 3.09ct lab-grown cushion sits in the three to five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG534246826 or 534246826. Listed at 3 retailers as of October 28, 2026. 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

3.09
Carat
I
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.6°
Pavilion angle31.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG534246826
Dimensions8.62 × 8.23 × 4.96 mm
L/W Ratio1.05
Girdle conditionFaceted
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
8.62 mm8.23 mm3.09 ctI / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG534246826
Side View
Table 72.0%Crown 40.6°Girdle: STK-VTKPavilion 31.3°Culet: NoneDepth 60.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: £2,479 GBP|Low: £2,273 GBP|High: £11,761 GBP|Avg: £4,147 GBP|+3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
The Diamond Guys
October 28, 2026
Retailer 2£2,273 GBP
Retailer 5£2,474 GBP
Retailer 1£2,479 GBP
Retailer 3£4,481 GBP
Retailer 4£6,514 GBP
The Diamond Guys£11,761 GBP

3 data points across 6 retailers

3 retailers

B
Cheapest Retailer
-
£2,474 GBP
$3,315 USD
Retailer 2
-
£4,481 GBP
View
Price last confirmed 18 days ago
Most Expensive
The Diamond Guys
1996342624 · Oct 28
£11,761 GBP
$15,759 USD
View
Price under review
2 more retailers have this diamond
Prices start from £2,474 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.

B
3.09ct Cushion
£2,474 GBP