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Marquise|Lab Grown|IGI

1.00ct G SI1 Marquise Lab Grown Diamond

ID • G/SI1 • IGI LG766647563

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG766647563

Diamond specifications and retailer prices

From £210 GBP
As of November 3, 2026
Save £401 GBP (66%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £611 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG766647563 or 766647563. Listed at 7 retailers as of November 2, 2026, with prices from £210 to £611, a £401 spread on the same certified stone. MOH London lists it at £611. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.4°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG766647563
Dimensions10.71 × 5.18 × 3.08 mm
L/W Ratio2.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.71 mm5.18 mm1.00 ctG / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG766647563
Side View
Table 67.0%Crown 37.4°Girdle: MED-THKPavilion 39.2°Culet: NoneDepth 59.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 3
Current: £611 GBP|Low: £210 GBP|High: £618 GBP|Avg: £315 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 4, 2026
Retailer 7£210 GBP
Retailer 2£221 GBP
Retailer 5£243 GBP
Retailer 3£248 GBP
Retailer 6£313 GBP
Retailer 4£350 GBP
MOH London£611 GBP

41 data points across 7 retailers

7 retailers£210 GBP to £611 GBP

A
Cheapest Retailer
-
£210 GBP
A
Retailer 2
-
£221 GBP
View
A
Retailer 3
-
£243 GBP
View
A
Retailer 4
-
£248 GBP
View
B+
Retailer 5
-
£313 GBP
View
B+
Retailer 6
-
£350 GBP
View
Most Expensive
B
MOH London
LG766647563 · Nov 2
£611 GBP
View
6 more retailers have this diamond
Prices start from £210 GBPSave up to £401 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
£210 GBP