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Marquise|Lab Grown|IGI

1.00ct I VS1 Marquise Lab Grown Diamond

ID • I/VS1 • IGI LG500148443

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG500148443

Diamond specifications and retailer prices

From £430 GBP
As of November 4, 2026
Save £2,898 GBP (87%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,327 GBP at MOH London · As of November 3, 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 I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG500148443 or 500148443. Listed at 12 retailers as of November 3, 2026, with prices from £430 to £3,327, a £2,898 spread on the same certified stone. MOH London lists it at £3,327. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500148443
Dimensions9.81 × 5.43 × 3.07 mm
L/W Ratio1.81
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
9.81 mm5.43 mm1.00 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500148443
Side View
Table 60.0%Crown 32°Girdle: MED-VTKPavilion 36.5°Culet: NoneDepth 56.5%

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: Nov 4
Current: £3,327 GBP|Low: £430 GBP|High: £3,368 GBP|Avg: £1,629 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 5£430 GBP
Retailer 6£893 GBP
Retailer 10£971 GBP
Retailer 7£1,036 GBP
Retailer 3£1,163 GBP
Retailer 4£1,450 GBP
Retailer 8£1,642 GBP
Retailer 2£1,905 GBP
Retailer 9£1,942 GBP
Retailer 12£1,984 GBP
Retailer 11£2,506 GBP
MOH London£3,327 GBP

22 data points across 12 retailers

12 retailers£430 GBP to £3,327 GBP

A
Cheapest Retailer
-
£430 GBP
B
Retailer 2
-
£893 GBP
View
B
Retailer 3
-
£971 GBP
View
Retailer 4
-
£1,036 GBP
View
Price last confirmed 24 days ago
B
Retailer 5
-
£1,036 GBP
View
B
Retailer 6
-
£1,163 GBP
View
B
Retailer 7
-
£1,642 GBP
View
B
Retailer 8
-
£1,905 GBP
View
B
Retailer 9
-
£1,942 GBP
View
B
Retailer 10
-
£1,984 GBP
View
B
Retailer 11
-
£2,506 GBP
View
Most Expensive
B
MOH London
LG500148443 · Nov 3
£3,327 GBP
View
11 more retailers have this diamond
Prices start from £430 GBPSave up to £2,898 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
£430 GBP