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Cushion|Lab Grown|IGI

3.01ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG840657033

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840657033

Diamond specifications and retailer prices

From £282 GBP
As of November 6, 2026
Save £1,638 GBP (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,920 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 E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG840657033 or 840657033. Listed at 11 retailers as of November 6, 2026, with prices from £282 to £1,920, a £1,638 spread on the same certified stone. Brilliant Earth lists it at £1,920. 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

3.01
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle29.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840657033
Dimensions10.02 × 7.23 × 4.66 mm
L/W Ratio1.39
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.02 mm7.23 mm3.01 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840657033
Side View
Table 60.0%Crown 35.3°Girdle: MED-THKPavilion 29.9°Culet: NoneDepth 64.5%

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 6
Current: £383 GBP|Low: £282 GBP|High: £1,479 GBP|Avg: £612 GBP|-3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 6£282 GBP
Retailer 9£344 GBP
Retailer 1£383 GBP
Retailer 5£474 GBP
Retailer 4£482 GBP
Retailer 7£504 GBP
Retailer 3£554 GBP
Retailer 2£735 GBP
Retailer 8£781 GBP
Retailer 10£1,464 GBP

32 data points across 10 retailers

11 retailers£282 GBP to £1,920 GBP

A
Cheapest Retailer
-
£282 GBP
Final sale: no returns
A
Retailer 2
-
£344 GBP
View
A
Retailer 3
-
£383 GBP
View
B+
Retailer 4
-
£474 GBP
View
A
Retailer 5
-
£482 GBP
View
B+
Retailer 6
-
£504 GBP
View
A
Retailer 7
-
£554 GBP
View
Retailer 8
-
£735 GBP
View
Price last confirmed 12 days ago
B+
Retailer 9
-
£781 GBP
View
Retailer 10
-
£1,464 GBP
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21823075A · Nov 6
£1,920 GBP
$2,570 USD
View
10 more retailers have this diamond
Prices start from £282 GBPSave up to £1,638 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
£282 GBP