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Marquise|Lab Grown|IGI

0.91ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG823694927

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG823694927

Diamond specifications and retailer prices

From £289 GBP
As of November 4, 2026
Save £1,046 GBP (78%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,408 GBP at MOH London · As of October 29, 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 LG823694927 or 823694927. Listed at 19 retailers as of November 4, 2026, with a 362% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle35°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823694927
Dimensions10.10 × 5.04 × 3.16 mm
L/W Ratio2.00
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
10.10 mm5.04 mm0.91 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823694927
Side View
Table 60.0%Crown 35°Girdle: MediumPavilion 40.3°Culet: NoneDepth 62.7%

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: £1,408 GBP|Low: £289 GBP|High: £1,567 GBP|Avg: £777 GBP|-10.2%
MOH London
Retailer 2
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Retailer 19
November 5, 2026
Retailer 11£289 GBP
Retailer 8£323 GBP
Retailer 17£324 GBP
Retailer 5£358 GBP
Retailer 6£358 GBP
Retailer 15£389 GBP
Retailer 3£476 GBP
Retailer 7£569 GBP
Retailer 14£572 GBP
Retailer 2£643 GBP
Retailer 12£650 GBP
Retailer 10£950 GBP
Retailer 16£1,005 GBP
Retailer 19£1,042 GBP
Retailer 18£1,152 GBP
Retailer 4£1,180 GBP
Retailer 13£1,211 GBP
Retailer 9£1,335 GBP
MOH London£1,408 GBP

43 data points across 19 retailers

19 retailers£289 GBP to £1,335 GBP

A
Cheapest Retailer
-
£289 GBP
A
Retailer 2
-
£323 GBP
View
Final sale: no returns
A
Retailer 3
-
£324 GBP
View
Retailer 4
-
£358 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£358 GBP
View
A
Retailer 6
-
£389 GBP
View
A
Retailer 7
-
£476 GBP
View
B+
Retailer 8
-
£569 GBP
View
Retailer 9
-
£572 GBP
View
Price last confirmed 9 days ago
B+
Retailer 10
-
£643 GBP
View
B+
Retailer 11
-
£650 GBP
View
B
Retailer 12
-
£950 GBP
View
B
Retailer 13
-
£1,005 GBP
View
B
Retailer 14
-
£1,042 GBP
View
B
Retailer 15
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£1,152 GBP
View
B
Retailer 16
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£1,180 GBP
View
B
Retailer 17
-
£1,211 GBP
View
B
Retailer 18
-
£1,335 GBP
View
Most Expensive
MOH London
LG823694927 · Oct 29
£1,408 GBP
View
Price last confirmed 7 days ago
18 more retailers have this diamond
Prices start from £289 GBPSave up to £1,046 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
£289 GBP