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Marquise|Lab Grown|IGI

1.00ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG837645791

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG837645791

Diamond specifications and retailer prices

From £143 GBP
$192 USD
As of November 1, 2026
Save £528 GBP (79%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £671 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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG837645791 or 837645791. Listed at 20 retailers as of November 1, 2026, with prices from £143 to £671, a £528 spread on the same certified stone. MOH London lists it at £671. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837645791
Dimensions10.84 × 5.10 × 3.10 mm
L/W Ratio2.13
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.84 mm5.10 mm1.00 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837645791
Side View
Table 62.0%Crown 34.1°Girdle: STK-THKPavilion 38.9°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
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: Nov 1
Current: £671 GBP|Low: £143 GBP|High: £679 GBP|Avg: £334 GBP|-1.1%
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
November 2, 2026
Retailer 13£143 GBP
Retailer 2£176 GBP
Retailer 14£233 GBP
Retailer 9£248 GBP
Retailer 7£249 GBP
Retailer 12£250 GBP
Retailer 3£262 GBP
Retailer 11£272 GBP
Retailer 8£350 GBP
Retailer 5£393 GBP
Retailer 4£453 GBP
Retailer 10£487 GBP
Retailer 6£502 GBP
MOH London£671 GBP

35 data points across 14 retailers

20 retailers£143 GBP to £671 GBP

Retailer 1
-
£116 GBP
$155 USD
Price last confirmed 33 days ago
Retailer 2
-
£134 GBP
$180 USD
View
Price last confirmed 34 days ago
Retailer 3
-
£142 GBP
$190 USD
View
Price last confirmed 34 days ago
Retailer 4
-
£143 GBP
$192 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£143 GBP
$192 USD
View
A
Retailer 6
-
£176 GBP
View
A
Retailer 7
-
£233 GBP
$313 USD
View
A
Retailer 8
-
£248 GBP
ZAR 5,367 ZAR
View
A
Retailer 9
-
£249 GBP
View
A
Retailer 10
-
£250 GBP
€319 EUR
View
A
Retailer 11
-
£262 GBP
$351 USD
View
A
Retailer 12
-
£272 GBP
View
B+
Retailer 13
-
£350 GBP
A$722 AUD
View
B+
Retailer 14
-
£393 GBP
SGD 713 SGD
View
Retailer 15
-
£461 GBP
$619 USD
View
Price last confirmed 33 days ago
B+
Retailer 16
-
£461 GBP
$619 USD
View
B+
Retailer 17
-
£462 GBP
$620 USD
View
B+
Retailer 18
-
£487 GBP
$654 USD
View
B
Retailer 19
-
£502 GBP
$674 USD
View
Most Expensive
B
MOH London
LG837645791 · Nov 2
£671 GBP
View
19 more retailers have this diamond
Prices start from £143 GBPSave up to £528 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
£143 GBP