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Cushion|Lab Grown|IGI

3.03ct F SI1 Cushion Lab Grown Diamond

VG • F/SI1 • IGI LG742526826

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG742526826

Diamond specifications and retailer prices

From £417 GBP
As of November 6, 2026
Save £825 GBP (66%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,496 GBP at Rare Carat · As of September 9, 2026
View at Rare Carat

About this 3.03ct lab-grown cushion diamond

This 3.03ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG742526826 or 742526826. Listed at 7 retailers as of November 3, 2026, with a 198% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.03
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG742526826
Dimensions9.78 × 7.32 × 4.84 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.78 mm7.32 mm3.03 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG742526826
Side View
Table 68.0%Crown 33.5°Girdle: STK-VTKPavilion 35.8°Culet: NoneDepth 66.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,496 GBP|Low: £344 GBP|High: £2,586 GBP|Avg: £784 GBP
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7£344 GBP
Retailer 6£417 GBP
Retailer 4£492 GBP
Retailer 2£549 GBP
Retailer 5£748 GBP
Retailer 3£1,242 GBP
Rare Carat£1,496 GBP

39 data points across 7 retailers

7 retailers£417 GBP to £1,242 GBP

Retailer 1
-
£344 GBP
Price last confirmed 64 days ago
B+
Retailer 2
-
£417 GBP
View
A
Retailer 3
-
£492 GBP
View
A
Retailer 4
-
£549 GBP
View
A
Retailer 5
-
£748 GBP
View
B
Retailer 6
-
£1,242 GBP
View
Most Expensive
Rare Carat
HP25-8 · Sep 9
£1,496 GBP
$2,003 USD
View
Price last confirmed 58 days ago
6 more retailers have this diamond
Prices start from £417 GBPSave up to £825 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
3.03ct Cushion
£417 GBP