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Marquise|Lab Grown|IGI

0.91ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG831604135

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG831604135

Diamond specifications and retailer prices

From £177 GBP
As of November 4, 2026
Save £799 GBP (82%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £976 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

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 LG831604135 or 831604135. Listed at 18 retailers as of November 4, 2026, with prices from £177 to £976, a £799 spread on the same certified stone. Reve Diamonds lists it at £976. 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 angle33.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831604135
Dimensions10.09 × 5.18 × 3.20 mm
L/W Ratio1.95
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
10.09 mm5.18 mm0.91 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831604135
Side View
Table 58.0%Crown 33.4°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £266 GBP|Low: £177 GBP|High: £976 GBP|Avg: £477 GBP|-1.1%
Retailer 1
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Reve Diamonds
November 5, 2026
Retailer 17£177 GBP
Retailer 7£198 GBP
Retailer 13£205 GBP
Retailer 5£219 GBP
Retailer 6£247 GBP
Retailer 1£266 GBP
Retailer 15£297 GBP
Retailer 16£388 GBP
Retailer 12£397 GBP
Retailer 10£409 GBP
Retailer 3£437 GBP
Retailer 14£549 GBP
Retailer 8£590 GBP
Retailer 9£704 GBP
Retailer 4£742 GBP
Retailer 2£761 GBP
Retailer 11£874 GBP
Reve Diamonds£976 GBP

9 data points across 18 retailers

18 retailers£177 GBP to £976 GBP

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Cheapest Retailer
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£177 GBP
A
Retailer 2
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£198 GBP
View
Final sale: no returns
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Retailer 3
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£205 GBP
View
A
Retailer 4
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£219 GBP
View
A
Retailer 5
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£247 GBP
View
A
Retailer 6
-
£266 GBP
View
A
Retailer 7
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£297 GBP
View
A
Retailer 8
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£388 GBP
View
A
Retailer 9
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£397 GBP
View
A
Retailer 10
-
£409 GBP
View
A
Retailer 11
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£437 GBP
View
B+
Retailer 12
-
£549 GBP
View
B+
Retailer 13
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£590 GBP
View
B+
Retailer 14
-
£704 GBP
View
B+
Retailer 15
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£742 GBP
View
B+
Retailer 16
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£761 GBP
View
B+
Retailer 17
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£874 GBP
View
Most Expensive
B
Reve Diamonds
189FEC737 · Nov 4
£976 GBP
$1,313 USD
View
17 more retailers have this diamond
Prices start from £177 GBPSave up to £799 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
£177 GBP