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Marquise|Lab Grown|IGI

1.00ct H VS1 Marquise Lab Grown Diamond

ID • H/VS1 • IGI LG603343098

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG603343098

Diamond specifications and retailer prices

From £172 GBP
As of November 4, 2026
Save £682 GBP (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £854 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG603343098 or 603343098. Listed at 13 retailers as of November 2, 2026, with prices from £172 to £854, a £682 spread on the same certified stone. MOH London lists it at £854. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG603343098
Dimensions11.02 × 5.21 × 3.01 mm
L/W Ratio2.12
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
11.02 mm5.21 mm1.00 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG603343098
Side View
Table 64.0%Crown 32.7°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 57.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £854 GBP|Low: £165 GBP|High: £865 GBP|Avg: £469 GBP|+2.1%
MOH London
Retailer 2
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Retailer 12
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November 2, 2026
Retailer 11£172 GBP
Retailer 16£199 GBP
Retailer 3£213 GBP
Retailer 13£213 GBP
Retailer 15£361 GBP
Retailer 2£368 GBP
Retailer 7£370 GBP
Retailer 4£384 GBP
Retailer 12£467 GBP
Retailer 9£520 GBP
Retailer 6£556 GBP
Retailer 8£559 GBP
Retailer 14£685 GBP
Retailer 10£688 GBP
Retailer 5£813 GBP
MOH London£854 GBP

26 data points across 16 retailers

13 retailers£172 GBP to £854 GBP

A
Cheapest Retailer
-
£172 GBP
A
Retailer 2
-
£199 GBP
View
Retailer 3
-
£213 GBP
View
Price last confirmed 10 days ago
A
Retailer 4
-
£213 GBP
View
A
Retailer 5
-
£361 GBP
View
A
Retailer 6
-
£368 GBP
View
A
Retailer 7
-
£370 GBP
View
A
Retailer 8
-
£384 GBP
View
A
Retailer 9
-
£467 GBP
View
Retailer 10
-
£520 GBP
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£685 GBP
View
B+
Retailer 12
-
£688 GBP
View
Most Expensive
B+
MOH London
LG603343098 · Nov 2
£854 GBP
View
12 more retailers have this diamond
Prices start from £172 GBPSave up to £682 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
1.00ct Marquise
£172 GBP