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Cushion|Lab Grown|IGI

3.01ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG541284246

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG541284246

Diamond specifications and retailer prices

From £456 GBP
As of November 6, 2026
Save £1,233 GBP (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,688 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 3.01ct lab-grown cushion diamond

This 3.01ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG541284246 or 541284246. Listed at 10 retailers as of November 6, 2026, with prices from £456 to £1,688, a £1,233 spread on the same certified stone. Brilliant Earth lists it at £1,688. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.01
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG541284246
Dimensions8.86 × 8.49 × 5.35 mm
L/W Ratio1.04
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
8.86 mm8.49 mm3.01 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG541284246
Side View
Table 60.5%Crown 34.2°Girdle: THK-VTKPavilion 38.4°Culet: NoneDepth 63.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,688 GBP|Low: £333 GBP|High: £1,718 GBP|Avg: £801 GBP|+1.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9£333 GBP
Retailer 8£456 GBP
Retailer 6£459 GBP
Retailer 4£536 GBP
Retailer 2£617 GBP
Retailer 5£635 GBP
Retailer 7£787 GBP
Retailer 3£1,349 GBP
Retailer 10£1,351 GBP
Brilliant Earth£1,688 GBP

44 data points across 10 retailers

10 retailers£456 GBP to £1,688 GBP

Retailer 1
-
£333 GBP
Price last confirmed 12 days ago
A
Retailer 2
-
£456 GBP
View
B+
Retailer 3
-
£459 GBP
View
A
Retailer 4
-
£536 GBP
View
A
Retailer 5
-
£617 GBP
View
A
Retailer 6
-
£635 GBP
View
B+
Retailer 7
-
£787 GBP
View
B+
Retailer 8
-
£1,349 GBP
View
Retailer 9
-
£1,351 GBP
View
Price last confirmed 24 days ago
Most Expensive
B
Brilliant Earth
20456355A · Nov 6
£1,688 GBP
$2,260 USD
View
9 more retailers have this diamond
Prices start from £456 GBPSave up to £1,233 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
3.01ct Cushion
£456 GBP