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Cushion|Lab Grown|IGI

3.01ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG536278998

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG536278998

Diamond specifications and retailer prices

From £331 GBP
As of November 6, 2026
Save £2,374 GBP (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,705 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG536278998 or 536278998. Listed at 13 retailers as of November 6, 2026, with prices from £331 to £2,705, a £2,374 spread on the same certified stone. Brilliant Earth lists it at £2,705. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG536278998
Dimensions8.69 × 8.43 × 5.39 mm
L/W Ratio1.03
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
8.69 mm8.43 mm3.01 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG536278998
Side View
Table 63.0%Crown 32°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 63.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,705 GBP|Low: £331 GBP|High: £2,757 GBP|Avg: £1,004 GBP|+4.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£331 GBP
Retailer 6£367 GBP
Retailer 5£430 GBP
Retailer 2£610 GBP
Retailer 9£649 GBP
Retailer 4£661 GBP
Retailer 7£1,312 GBP
Retailer 3£1,483 GBP
Brilliant Earth£2,705 GBP

44 data points across 9 retailers

13 retailers£331 GBP to £2,705 GBP

A
Cheapest Retailer
-
£331 GBP
Final sale: no returns
Retailer 2
-
£367 GBP
View
Price last confirmed 12 days ago
A
Retailer 3
-
£430 GBP
View
B+
Retailer 4
-
£484 GBP
View
A
Retailer 5
-
£610 GBP
View
A
Retailer 6
-
£611 GBP
View
A
Retailer 7
-
£649 GBP
View
A
Retailer 8
-
£661 GBP
View
B+
Retailer 9
-
£1,163 GBP
View
B+
Retailer 10
-
£1,312 GBP
View
B+
Retailer 11
-
£1,483 GBP
View
B
Retailer 12
-
£2,630 GBP
View
Most Expensive
B
Brilliant Earth
16513574A · Nov 6
£2,705 GBP
$3,620 USD
View
12 more retailers have this diamond
Prices start from £331 GBPSave up to £2,374 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
£331 GBP