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Marquise|Lab Grown|IGI

1.06ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG818618919

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818618919

Diamond specifications and retailer prices

From £120 GBP
As of November 6, 2026
Save £574 GBP (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £694 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.06ct lab-grown marquise diamond

This 1.06ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818618919 or 818618919. Listed at 15 retailers as of November 4, 2026, with prices from £120 to £694, a £574 spread on the same certified stone. MOH London lists it at £694. 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

1.06
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818618919
Dimensions10.91 × 5.19 × 3.24 mm
L/W Ratio2.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.91 mm5.19 mm1.06 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818618919
Side View
Table 63.0%Crown 32.8°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.4%

Caratlytics Score

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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 6
Current: £694 GBP|Low: £115 GBP|High: £703 GBP|Avg: £303 GBP|-0.3%
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
November 6, 2026
Retailer 12£120 GBP
Retailer 4£139 GBP
Retailer 6£149 GBP
Retailer 14£149 GBP
Retailer 2£177 GBP
Retailer 8£259 GBP
Retailer 5£261 GBP
Retailer 3£269 GBP
Retailer 9£282 GBP
Retailer 10£282 GBP
Retailer 7£330 GBP
Retailer 13£424 GBP
Retailer 15£478 GBP
Retailer 11£504 GBP
MOH London£694 GBP

45 data points across 15 retailers

15 retailers£120 GBP to £694 GBP

A
Cheapest Retailer
-
£120 GBP
A
Retailer 2
-
£139 GBP
View
Retailer 3
-
£149 GBP
View
Price last confirmed 12 days ago
A
Retailer 4
-
£149 GBP
View
A
Retailer 5
-
£177 GBP
View
A
Retailer 6
-
£259 GBP
View
A
Retailer 7
-
£261 GBP
View
B+
Retailer 8
-
£269 GBP
View
B+
Retailer 9
-
£282 GBP
View
Retailer 10
-
£282 GBP
View
Price last confirmed 10 days ago
B+
Retailer 11
-
£330 GBP
View
Retailer 12
-
£424 GBP
View
Price last confirmed 9 days ago
B
Retailer 13
-
£478 GBP
View
B
Retailer 14
-
£504 GBP
View
Most Expensive
B
MOH London
LG818618919 · Nov 4
£694 GBP
View
14 more retailers have this diamond
Prices start from £120 GBPSave up to £574 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
1.06ct Marquise
£120 GBP