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Oval|Lab Grown|IGI

4.01ct F SI1 Oval Lab Grown Diamond

EX • F/SI1 • IGI LG816657148

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG816657148

Diamond specifications and retailer prices

From £393 GBP
$527 USD
As of November 1, 2026
Save £1,646 GBP (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,040 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 4.01ct lab-grown oval diamond

This 4.01ct lab-grown oval 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 LG816657148 or 816657148. Listed at 11 retailers as of October 26, 2026, with prices from £393 to £2,040, a £1,646 spread on the same certified stone. MOH London lists it at £2,040. 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

4.01
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816657148
Dimensions12.68 × 9.07 × 5.46 mm
L/W Ratio1.40
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.68 mm9.07 mm4.01 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816657148
Side View
Table 62.0%Crown 34.4°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.2%

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 1
Current: £2,040 GBP|Low: £372 GBP|High: £2,048 GBP|Avg: £1,111 GBP|+3.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8£393 GBP
Retailer 2£421 GBP
Retailer 6£441 GBP
Retailer 4£738 GBP
Retailer 11£782 GBP
Retailer 7£1,260 GBP
Retailer 5£1,261 GBP
Retailer 10£1,284 GBP
Retailer 9£1,698 GBP
Retailer 3£1,940 GBP
MOH London£2,040 GBP

37 data points across 11 retailers

11 retailers£393 GBP to £2,040 GBP

A
Cheapest Retailer
-
£393 GBP
$527 USD
A
Retailer 2
-
£421 GBP
View
A
Retailer 3
-
£441 GBP
$591 USD
View
A
Retailer 4
-
£738 GBP
€942 EUR
View
A
Retailer 5
-
£782 GBP
$1,048 USD
View
B
Retailer 6
-
£1,260 GBP
$1,688 USD
View
B
Retailer 7
-
£1,261 GBP
$1,690 USD
View
B
Retailer 8
-
£1,284 GBP
$1,720 USD
View
B
Retailer 9
-
£1,698 GBP
$2,275 USD
View
Retailer 10
-
£1,940 GBP
SGD 3,513 SGD
View
Price last confirmed 21 days ago
Most Expensive
B
MOH London
LG816657148 · Oct 26
£2,040 GBP
View
10 more retailers have this diamond
Prices start from £393 GBPSave up to £1,646 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
£393 GBP