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Marquise|Lab Grown|IGI

1.00ct H VS1 Marquise Lab Grown Diamond

ID • H/VS1 • IGI LG514254137

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG514254137

Diamond specifications and retailer prices

From £539 GBP
$722 USD
As of October 30, 2026
Save £1,917 GBP (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,456 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG514254137 or 514254137. Listed at 15 retailers as of October 30, 2026, with prices from £539 to £2,456, a £1,917 spread on the same certified stone. MOH London lists it at £2,456. 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 angle32.9°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514254137
Dimensions10.80 × 5.16 × 2.95 mm
L/W Ratio2.09
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
10.80 mm5.16 mm1.00 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514254137
Side View
Table 56.5%Crown 32.9°Girdle: STK-VTKPavilion 36.1°Culet: NoneDepth 57.2%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,456 GBP|Low: £430 GBP|High: £2,488 GBP|Avg: £1,256 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
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 12£539 GBP
Retailer 3£587 GBP
Retailer 4£603 GBP
Retailer 14£625 GBP
Retailer 13£716 GBP
Retailer 10£758 GBP
Retailer 7£982 GBP
Retailer 16£1,014 GBP
Retailer 9£1,149 GBP
Retailer 11£1,540 GBP
Retailer 2£1,629 GBP
Retailer 15£1,758 GBP
Retailer 8£1,790 GBP
Retailer 5£1,945 GBP
Retailer 6£1,958 GBP
MOH London£2,456 GBP

27 data points across 16 retailers

15 retailers£539 GBP to £2,456 GBP

B+
Cheapest Retailer
-
£539 GBP
$722 USD
B+
Retailer 2
-
£587 GBP
$786 USD
View
B+
Retailer 3
-
£603 GBP
$808 USD
View
Final sale: no returns
B+
Retailer 4
-
£625 GBP
$838 USD
View
Retailer 5
-
£625 GBP
$838 USD
View
Price last confirmed 15 days ago
B+
Retailer 6
-
£716 GBP
$960 USD
View
B+
Retailer 7
-
£758 GBP
$1,015 USD
View
B
Retailer 8
-
£1,014 GBP
$1,359 USD
View
B
Retailer 9
-
£1,149 GBP
ZAR 24,881 ZAR
View
B
Retailer 10
-
£1,540 GBP
$2,064 USD
View
B
Retailer 11
-
£1,629 GBP
A$3,359 AUD
View
B
Retailer 12
-
£1,758 GBP
$2,356 USD
View
B
Retailer 13
-
£1,945 GBP
View
B
Retailer 14
-
£1,958 GBP
$2,623 USD
View
Most Expensive
B
MOH London
LG514254137 · Nov 1
£2,456 GBP
View
14 more retailers have this diamond
Prices start from £539 GBPSave up to £1,917 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.

B+
1.00ct Marquise
£539 GBP