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Marquise|Lab Grown|IGI

1.03ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG818682430

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818682430

Diamond specifications and retailer prices

From £132 GBP
$177 USD
As of October 30, 2026
Save £635 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £767 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.03ct lab-grown marquise diamond

This 1.03ct lab-grown marquise sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818682430 or 818682430. Listed at 18 retailers as of October 30, 2026, with prices from £132 to £767, a £635 spread on the same certified stone. MOH London lists it at £767. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818682430
Dimensions10.64 × 5.04 × 3.23 mm
L/W Ratio2.11
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.64 mm5.04 mm1.03 ctG / VS1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818682430
Side View
Table 59.0%Crown 33.1°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 64.1%

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: Oct 30
Current: £767 GBP|Low: £127 GBP|High: £778 GBP|Avg: £355 GBP|-1.2%
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
Retailer 14
Retailer 15
November 1, 2026
Retailer 5£132 GBP
Retailer 15£147 GBP
Retailer 14£154 GBP
Retailer 8£201 GBP
Retailer 6£251 GBP
Retailer 2£283 GBP
Retailer 13£292 GBP
Retailer 9£295 GBP
Retailer 12£388 GBP
Retailer 11£400 GBP
Retailer 10£416 GBP
Retailer 4£448 GBP
Retailer 7£528 GBP
Retailer 3£568 GBP
MOH London£767 GBP

29 data points across 15 retailers

18 retailers£132 GBP to £767 GBP

A
Cheapest Retailer
-
£132 GBP
$177 USD
A
Retailer 2
-
£147 GBP
$197 USD
View
Final sale: no returns
A
Retailer 3
-
£154 GBP
$206 USD
View
Retailer 4
-
£164 GBP
$220 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£164 GBP
$220 USD
View
A
Retailer 6
-
£201 GBP
View
A
Retailer 7
-
£251 GBP
$336 USD
View
A
Retailer 8
-
£283 GBP
ZAR 6,131 ZAR
View
A
Retailer 9
-
£292 GBP
$391 USD
View
A
Retailer 10
-
£295 GBP
View
B+
Retailer 11
-
£388 GBP
$520 USD
View
B+
Retailer 12
-
£400 GBP
$536 USD
View
B+
Retailer 13
-
£416 GBP
$558 USD
View
B+
Retailer 14
-
£448 GBP
SGD 812 SGD
View
B
Retailer 15
-
£528 GBP
$707 USD
View
B
Retailer 16
-
£550 GBP
$737 USD
View
B
Retailer 17
-
£568 GBP
$761 USD
View
Most Expensive
B
MOH London
LG818682430 · Nov 1
£767 GBP
View
17 more retailers have this diamond
Prices start from £132 GBPSave up to £635 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
1.03ct Marquise
£132 GBP