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Marquise|Lab Grown|IGI

1.31ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG782691142

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG782691142

Diamond specifications and retailer prices

From £154 GBP
$206 USD
As of November 2, 2026
Save £736 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £890 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.31ct lab-grown marquise diamond

This 1.31ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG782691142 or 782691142. Listed at 19 retailers as of November 1, 2026, with prices from £154 to £890, a £736 spread on the same certified stone. MOH London lists it at £890. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG782691142
Dimensions11.47 × 5.74 × 3.46 mm
L/W Ratio2.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.47 mm5.74 mm1.31 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG782691142
Side View
Table 60.0%Crown 34.9°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 60.3%

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 2
Current: £890 GBP|Low: £148 GBP|High: £901 GBP|Avg: £433 GBP
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
November 2, 2026
Retailer 12£154 GBP
Retailer 4£178 GBP
Retailer 5£190 GBP
Retailer 14£190 GBP
Retailer 13£268 GBP
Retailer 9£315 GBP
Retailer 7£329 GBP
Retailer 2£348 GBP
Retailer 10£465 GBP
Retailer 11£493 GBP
Retailer 3£612 GBP
Retailer 8£656 GBP
Retailer 6£750 GBP
MOH London£890 GBP

44 data points across 14 retailers

19 retailers£154 GBP to £890 GBP

A
Cheapest Retailer
-
£154 GBP
$206 USD
A
Retailer 2
-
£178 GBP
$239 USD
View
A
Retailer 3
-
£190 GBP
$255 USD
View
Retailer 4
-
£190 GBP
$255 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£268 GBP
$360 USD
View
A
Retailer 6
-
£315 GBP
€403 EUR
View
A
Retailer 7
-
£329 GBP
ZAR 7,124 ZAR
View
A
Retailer 8
-
£348 GBP
View
A
Retailer 9
-
£376 GBP
$504 USD
View
B+
Retailer 10
-
£465 GBP
A$961 AUD
View
B+
Retailer 11
-
£493 GBP
$662 USD
View
B+
Retailer 12
-
£496 GBP
$666 USD
View
Retailer 13
-
£538 GBP
A$1,111 AUD
View
Price last confirmed 139 days ago
B+
Retailer 14
-
£612 GBP
$821 USD
View
B
Retailer 15
-
£619 GBP
SGD 1,123 SGD
View
B
Retailer 16
-
£652 GBP
$874 USD
View
B+
Retailer 17
-
£656 GBP
$880 USD
View
B
Retailer 18
-
£750 GBP
View
Most Expensive
B
MOH London
LG782691142 · Nov 1
£890 GBP
View
18 more retailers have this diamond
Prices start from £154 GBPSave up to £736 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
1.31ct Marquise
£154 GBP