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Marquise|Lab Grown|IGI

1.31ct F VS2 Marquise Lab Grown Diamond

ID • F/VS2 • IGI LG508156280

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG508156280

Diamond specifications and retailer prices

From £745 GBP
$1,000 USD
As of November 2, 2026
Save £683 GBP (48%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,872 GBP at Friendly Diamonds · As of November 2, 2026
View at Friendly Diamonds

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 VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508156280 or 508156280. Listed at 14 retailers as of November 1, 2026, with a 92% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle31.7°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508156280
Dimensions11.11 × 5.79 × 3.51 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
11.11 mm5.79 mm1.31 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG508156280
Side View
Table 64.0%Crown 31.7°Girdle: MED-STKPavilion 41.9°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,279 GBP|Low: £741 GBP|High: £3,075 GBP|Avg: £1,391 GBP|-2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 5£745 GBP
Retailer 6£772 GBP
Retailer 10£841 GBP
Retailer 11£865 GBP
Retailer 7£896 GBP
Retailer 3£1,025 GBP
Retailer 1£1,279 GBP
Retailer 8£1,429 GBP
Retailer 9£1,679 GBP
Retailer 2£2,476 GBP
Retailer 4£3,038 GBP

43 data points across 11 retailers

14 retailers£745 GBP to £1,429 GBP

B+
Cheapest Retailer
-
£745 GBP
$1,000 USD
B
Retailer 2
-
£772 GBP
$1,036 USD
View
B
Retailer 3
-
£841 GBP
$1,128 USD
View
B
Retailer 4
-
£865 GBP
$1,161 USD
View
Final sale: no returns
Retailer 5
-
£896 GBP
$1,202 USD
View
Price last confirmed 16 days ago
B
Retailer 6
-
£896 GBP
$1,202 USD
View
B
Retailer 7
-
£1,025 GBP
$1,375 USD
View
B
Retailer 8
-
£1,279 GBP
View
B
Retailer 9
-
£1,429 GBP
$1,917 USD
View
Retailer 10
-
£1,679 GBP
$2,253 USD
View
Price under review
Most Expensive
Friendly Diamonds
2231555 · Nov 2
£1,872 GBP
$2,512 USD
View
Price under review
10 more retailers have this diamond
Prices start from £745 GBPSave up to £683 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.

B+
1.31ct Marquise
£745 GBP