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Marquise|Lab Grown|IGI

0.91ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG799677139

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG799677139

Diamond specifications and retailer prices

From £300 GBP
As of November 4, 2026
Save £1,149 GBP (79%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,449 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 0.91ct lab-grown marquise diamond

This 0.91ct lab-grown marquise sits in the just-under-one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG799677139 or 799677139. Listed at 21 retailers as of November 4, 2026, with prices from £300 to £1,449, a £1,149 spread on the same certified stone. MOH London lists it at £1,449. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.91
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799677139
Dimensions10.15 × 5.03 × 3.18 mm
L/W Ratio2.02
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.15 mm5.03 mm0.91 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799677139
Side View
Table 57.0%Crown 36°Girdle: THN-MEDPavilion 40.3°Culet: NoneDepth 63.2%

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 4
Current: £1,449 GBP|Low: £299 GBP|High: £1,486 GBP|Avg: £778 GBP|+1.1%
MOH London
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November 5, 2026
Retailer 14£300 GBP
Retailer 9£335 GBP
Retailer 19£336 GBP
Retailer 6£371 GBP
Retailer 7£371 GBP
Retailer 12£409 GBP
Retailer 3£480 GBP
Retailer 4£534 GBP
Retailer 8£589 GBP
Retailer 16£591 GBP
Retailer 2£605 GBP
Retailer 13£675 GBP
Retailer 17£769 GBP
Retailer 11£986 GBP
Retailer 18£1,043 GBP
Retailer 21£1,087 GBP
Retailer 20£1,195 GBP
Retailer 5£1,221 GBP
Retailer 15£1,271 GBP
Retailer 10£1,369 GBP
MOH London£1,449 GBP

42 data points across 21 retailers

21 retailers£300 GBP to £1,449 GBP

A
Cheapest Retailer
-
£300 GBP
A
Retailer 2
-
£335 GBP
View
Final sale: no returns
A
Retailer 3
-
£336 GBP
View
Retailer 4
-
£371 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£371 GBP
View
A
Retailer 6
-
£409 GBP
View
A
Retailer 7
-
£480 GBP
View
A
Retailer 8
-
£534 GBP
View
B+
Retailer 9
-
£589 GBP
View
Retailer 10
-
£591 GBP
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£605 GBP
View
B+
Retailer 12
-
£675 GBP
View
B+
Retailer 13
-
£769 GBP
View
B
Retailer 14
-
£986 GBP
View
B
Retailer 15
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£1,043 GBP
View
B
Retailer 16
-
£1,087 GBP
View
B
Retailer 17
-
£1,195 GBP
View
B
Retailer 18
-
£1,221 GBP
View
B
Retailer 19
-
£1,271 GBP
View
B
Retailer 20
-
£1,369 GBP
View
Most Expensive
B
MOH London
LG799677139 · Nov 5
£1,449 GBP
View
20 more retailers have this diamond
Prices start from £300 GBPSave up to £1,149 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
0.91ct Marquise
£300 GBP