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Cushion|Lab Grown|IGI

4.01ct H SI1 Cushion Lab Grown Diamond

VG • H/SI1 • IGI LG447069257

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

Certificate IGI LG447069257

Diamond specifications and retailer prices

From £710 GBP
As of November 5, 2026
Save £3,713 GBP (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,423 GBP at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 4.01ct lab-grown cushion diamond

This 4.01ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG447069257 or 447069257. Listed at 10 retailers as of November 5, 2026, with prices from £710 to £4,423, a £3,713 spread on the same certified stone. Do Amore Diamonds lists it at £4,423. 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

4.01
Carat
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447069257
Dimensions9.01 × 8.85 × 6.29 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
9.01 mm8.85 mm4.01 ctH / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447069257
Side View
Table 63.0%Crown 35.4°Girdle: THK-VTKPavilion 40.4°Culet: NoneDepth 71.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £4,423 GBP|Low: £476 GBP|High: £4,423 GBP|Avg: £1,434 GBP|+29.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9£578 GBP
Retailer 4£696 GBP
Retailer 6£710 GBP
Retailer 8£756 GBP
Retailer 2£770 GBP
Retailer 3£917 GBP
Retailer 10£943 GBP
Retailer 7£1,330 GBP
Retailer 11£1,355 GBP
Retailer 12£2,325 GBP
Retailer 5£2,498 GBP
Do Amore Diamonds£4,423 GBP

25 data points across 12 retailers

10 retailers£710 GBP to £4,423 GBP

Retailer 1
-
£578 GBP
Price last confirmed 22 days ago
B+
Retailer 2
-
£710 GBP
View
B+
Retailer 3
-
£756 GBP
View
B+
Retailer 4
-
£770 GBP
View
B+
Retailer 5
-
£943 GBP
View
Retailer 6
-
£1,330 GBP
View
Price last confirmed 10 days ago
B+
Retailer 7
-
£1,355 GBP
View
B
Retailer 8
-
£2,325 GBP
View
B
Retailer 9
-
£2,498 GBP
View
Most Expensive
B
Do Amore Diamonds
27-1304104FB · Nov 6
£4,423 GBP
$5,920 USD
View
9 more retailers have this diamond
Prices start from £710 GBPSave up to £3,713 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.

B+
4.01ct Cushion
£710 GBP