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Marquise|Lab Grown|IGI

1.00ct I VS1 Marquise Lab Grown Diamond

ID • I/VS1 • IGI LG499125610

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG499125610

Diamond specifications and retailer prices

From £432 GBP
$580 USD
As of November 2, 2026
Save £2,915 GBP (87%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,347 GBP at MOH London · As of November 1, 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 LG499125610 or 499125610. Listed at 12 retailers as of November 1, 2026, with prices from £432 to £3,347, a £2,915 spread on the same certified stone. MOH London lists it at £3,347. 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
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499125610
Dimensions10.49 × 5.14 × 2.96 mm
L/W Ratio2.04
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
10.49 mm5.14 mm1.00 ctI / VS1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499125610
Side View
Table 62.0%Crown 37°Girdle: STK-VTKPavilion 36.2°Culet: NoneDepth 57.6%

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 2
Current: £3,347 GBP|Low: £432 GBP|High: £3,388 GBP|Avg: £1,562 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
Retailer 13
November 1, 2026
Retailer 2£432 GBP
Retailer 5£670 GBP
Retailer 7£898 GBP
Retailer 11£977 GBP
Retailer 8£1,042 GBP
Retailer 3£1,170 GBP
Retailer 4£1,458 GBP
Retailer 9£1,652 GBP
Retailer 6£1,915 GBP
Retailer 10£1,953 GBP
Retailer 13£1,996 GBP
Retailer 12£2,521 GBP
MOH London£3,347 GBP

21 data points across 13 retailers

12 retailers£432 GBP to £3,347 GBP

A
Cheapest Retailer
-
£432 GBP
$580 USD
B
Retailer 2
-
£898 GBP
$1,205 USD
View
B
Retailer 3
-
£977 GBP
$1,311 USD
View
B
Retailer 4
-
£1,042 GBP
$1,398 USD
View
Retailer 5
-
£1,042 GBP
$1,398 USD
View
Price last confirmed 21 days ago
B
Retailer 6
-
£1,170 GBP
$1,570 USD
View
B
Retailer 7
-
£1,652 GBP
$2,217 USD
View
B
Retailer 8
-
£1,915 GBP
ZAR 41,520 ZAR
View
B
Retailer 9
-
£1,953 GBP
$2,621 USD
View
B
Retailer 10
-
£1,996 GBP
$2,678 USD
View
B
Retailer 11
-
£2,521 GBP
View
Most Expensive
B
MOH London
LG499125610 · Nov 1
£3,347 GBP
View
11 more retailers have this diamond
Prices start from £432 GBPSave up to £2,915 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
£432 GBP