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Cushion|Lab Grown|IGI

3.01ct H SI1 Cushion Lab Grown Diamond

ID • H/SI1 • IGI LG571399878

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG571399878

Diamond specifications and retailer prices

From £306 GBP
As of November 6, 2026
Save £1,013 GBP (77%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,319 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3.01ct lab-grown cushion diamond

This 3.01ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG571399878 or 571399878. Listed at 7 retailers as of November 5, 2026, with prices from £306 to £1,319, a £1,013 spread on the same certified stone. MOH London lists it at £1,319. 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
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG571399878
Dimensions8.96 × 7.83 × 5.19 mm
L/W Ratio1.14
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
8.96 mm7.83 mm3.01 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG571399878
Side View
Table 61.0%Crown 36.8°Girdle: MED-THKPavilion 37°Culet: NoneDepth 66.3%

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: £1,319 GBP|Low: £218 GBP|High: £1,339 GBP|Avg: £673 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5£306 GBP
Retailer 4£338 GBP
Retailer 3£541 GBP
Retailer 2£542 GBP
Retailer 8£549 GBP
Retailer 6£573 GBP
Retailer 7£774 GBP
Retailer 9£1,009 GBP
MOH London£1,319 GBP

16 data points across 9 retailers

7 retailers£306 GBP to £1,319 GBP

A
Cheapest Retailer
-
£306 GBP
Final sale: no returns
Retailer 2
-
£338 GBP
View
Price last confirmed 12 days ago
B+
Retailer 3
-
£541 GBP
View
B+
Retailer 4
-
£542 GBP
View
A
Retailer 5
-
£573 GBP
View
A
Retailer 6
-
£774 GBP
View
Most Expensive
B+
MOH London
LG571399878 · Nov 5
£1,319 GBP
View
6 more retailers have this diamond
Prices start from £306 GBPSave up to £1,013 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
£306 GBP