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Oval|Lab Grown|IGI

4.01ct F SI1 Oval Lab Grown Diamond

EX • F/SI1 • IGI LG786621556

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG786621556

Diamond specifications and retailer prices

From £393 GBP
$527 USD
As of November 1, 2026
Save £1,645 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,038 GBP at MOH London · As of November 1, 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 LG786621556 or 786621556. Listed at 10 retailers as of November 1, 2026, with prices from £393 to £2,038, a £1,645 spread on the same certified stone. MOH London lists it at £2,038. 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
SymmetryVery Good
FluorescenceNone
Crown angle34.4°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786621556
Dimensions13.02 × 8.99 × 5.31 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.02 mm8.99 mm4.01 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG786621556
Side View
Table 65.0%Crown 34.4°Girdle: STK-THKPavilion 40.1°Culet: NoneDepth 59.1%

Caratlytics Score

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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 1
Current: £2,038 GBP|Low: £367 GBP|High: £2,048 GBP|Avg: £1,070 GBP|+1.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 10£393 GBP
Retailer 2£421 GBP
Retailer 8£441 GBP
Retailer 6£738 GBP
Retailer 3£757 GBP
Retailer 12£782 GBP
Retailer 9£1,260 GBP
Retailer 7£1,261 GBP
Retailer 11£1,284 GBP
Retailer 4£1,325 GBP
Retailer 5£1,507 GBP
Retailer 13£1,919 GBP
MOH London£2,038 GBP

35 data points across 13 retailers

10 retailers£393 GBP to £2,038 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
B+
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
Retailer 9
-
£1,919 GBP
SGD 3,474 SGD
View
Price last confirmed 20 days ago
Most Expensive
B
MOH London
LG786621556 · Nov 1
£2,038 GBP
View
9 more retailers have this diamond
Prices start from £393 GBPSave up to £1,645 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