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Oval|Lab Grown|IGI

4.01ct H SI1 Oval Lab Grown Diamond

VG • H/SI1 • IGI LG574338629

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG574338629

Diamond specifications and retailer prices

From £310 GBP
As of November 6, 2026
Save £1,603 GBP (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,913 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 4.01ct lab-grown oval diamond

This 4.01ct lab-grown oval 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 LG574338629 or 574338629. Listed at 12 retailers as of November 6, 2026, with prices from £310 to £1,913, a £1,603 spread on the same certified stone. Brilliant Earth lists it at £1,913. 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 angle40.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG574338629
Dimensions11.66 × 8.64 × 5.90 mm
L/W Ratio1.35
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
11.66 mm8.64 mm4.01 ctH / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG574338629
Side View
Table 59.0%Crown 40.3°Girdle: STK-VTKPavilion 40.8°Culet: NoneDepth 68.3%

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: £1,913 GBP|Low: £310 GBP|High: £3,609 GBP|Avg: £883 GBP|-47.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 7£310 GBP
Retailer 9£367 GBP
Retailer 8£384 GBP
Retailer 4£493 GBP
Retailer 6£577 GBP
Retailer 3£612 GBP
Retailer 10£725 GBP
Retailer 11£1,015 GBP
Retailer 5£1,078 GBP
Retailer 2£1,554 GBP
Brilliant Earth£1,913 GBP

22 data points across 11 retailers

12 retailers£310 GBP to £1,913 GBP

A
Cheapest Retailer
-
£310 GBP
B+
Retailer 2
-
£347 GBP
View
B+
Retailer 3
-
£367 GBP
View
Final sale: no returns
B+
Retailer 4
-
£384 GBP
View
Retailer 5
-
£384 GBP
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£493 GBP
View
B+
Retailer 7
-
£577 GBP
View
B+
Retailer 8
-
£725 GBP
View
B+
Retailer 9
-
£1,078 GBP
View
B+
Retailer 10
-
£1,363 GBP
View
B+
Retailer 11
-
£1,554 GBP
View
Most Expensive
B
Brilliant Earth
16503079A · Nov 6
£1,913 GBP
$2,560 USD
View
11 more retailers have this diamond
Prices start from £310 GBPSave up to £1,603 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
4.01ct Oval
£310 GBP