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Marquise|Lab Grown|IGI

0.42ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG838608699

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG838608699

Diamond specifications and retailer prices

From £140 GBP
$187 USD
As of October 30, 2026
Save £672 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £811 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.42ct lab-grown marquise diamond

This 0.42ct lab-grown marquise sits in the sub-half-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG838608699 or 838608699. Listed at 19 retailers as of October 29, 2026, with prices from £140 to £811, a £672 spread on the same certified stone. MOH London lists it at £811. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.42
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838608699
Dimensions7.96 × 3.87 × 2.34 mm
L/W Ratio2.06
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.96 mm3.87 mm0.42 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838608699
Side View
Table 61.0%Crown 35°Girdle: MED-STKPavilion 39°Culet: NoneDepth 60.5%

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: Oct 30
Current: £811 GBP|Low: £140 GBP|High: £817 GBP|Avg: £371 GBP|-0.5%
MOH London
Retailer 2
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Retailer 19
October 31, 2026
Retailer 5£140 GBP
Retailer 18£160 GBP
Retailer 6£172 GBP
Retailer 19£172 GBP
Retailer 4£224 GBP
Retailer 17£272 GBP
Retailer 10£278 GBP
Retailer 16£284 GBP
Retailer 12£312 GBP
Retailer 2£313 GBP
Retailer 15£336 GBP
Retailer 14£336 GBP
Retailer 8£345 GBP
Retailer 13£450 GBP
Retailer 7£555 GBP
Retailer 9£569 GBP
Retailer 3£595 GBP
Retailer 11£672 GBP
MOH London£811 GBP

29 data points across 19 retailers

19 retailers£140 GBP to £811 GBP

A
Cheapest Retailer
-
£140 GBP
$187 USD
A
Retailer 2
-
£160 GBP
$214 USD
View
Final sale: no returns
A
Retailer 3
-
£172 GBP
$231 USD
View
A
Retailer 4
-
£172 GBP
$231 USD
View
A
Retailer 5
-
£224 GBP
$300 USD
View
A
Retailer 6
-
£272 GBP
$365 USD
View
B+
Retailer 7
-
£278 GBP
$373 USD
View
B+
Retailer 8
-
£284 GBP
€363 EUR
View
B+
Retailer 9
-
£312 GBP
ZAR 6,754 ZAR
View
B+
Retailer 10
-
£313 GBP
View
B+
Retailer 11
-
£336 GBP
$450 USD
View
B+
Retailer 12
-
£336 GBP
A$693 AUD
View
B+
Retailer 13
-
£345 GBP
$462 USD
View
B+
Retailer 14
-
£450 GBP
A$928 AUD
View
B
Retailer 15
-
£555 GBP
$744 USD
View
B
Retailer 16
-
£569 GBP
CA$1,058 CAD
View
B
Retailer 17
-
£595 GBP
$798 USD
View
B
Retailer 18
-
£672 GBP
$900 USD
View
Most Expensive
B
MOH London
LG838608699 · Oct 29
£811 GBP
View
18 more retailers have this diamond
Prices start from £140 GBPSave up to £672 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
0.42ct Marquise
£140 GBP