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Marquise|Lab Grown|IGI

1.31ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG818650471

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818650471

Diamond specifications and retailer prices

From £162 GBP
$217 USD
As of November 1, 2026
Save £714 GBP (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £876 GBP at Reve Diamonds · As of November 1, 2026
View at Reve 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818650471 or 818650471. Listed at 16 retailers as of November 1, 2026, with prices from £162 to £876, a £714 spread on the same certified stone. Reve Diamonds lists it at £876. 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 angle33.1°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818650471
Dimensions12.72 × 5.42 × 3.18 mm
L/W Ratio2.35
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.72 mm5.42 mm1.31 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818650471
Side View
Table 60.0%Crown 33.1°Girdle: Slightly ThickPavilion 38.3°Culet: NoneDepth 58.7%

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 1
Current: £463 GBP|Low: £162 GBP|High: £880 GBP|Avg: £450 GBP|+10.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Reve Diamonds
November 2, 2026
Retailer 3£162 GBP
Retailer 7£215 GBP
Retailer 4£242 GBP
Retailer 9£310 GBP
Retailer 12£315 GBP
Retailer 8£327 GBP
Retailer 2£373 GBP
Retailer 6£437 GBP
Retailer 1£463 GBP
Retailer 13£555 GBP
Retailer 5£617 GBP
Retailer 11£671 GBP
Retailer 10£839 GBP
Reve Diamonds£876 GBP

36 data points across 14 retailers

16 retailers£162 GBP to £876 GBP

A
Cheapest Retailer
-
£162 GBP
$217 USD
Final sale: no returns
Retailer 2
-
£179 GBP
$240 USD
View
Price last confirmed 36 days ago
A
Retailer 3
-
£200 GBP
HK$2,100 HKD
View
A
Retailer 4
-
£215 GBP
View
B+
Retailer 5
-
£242 GBP
$325 USD
View
A
Retailer 6
-
£310 GBP
ZAR 6,714 ZAR
View
A
Retailer 7
-
£315 GBP
€402 EUR
View
A
Retailer 8
-
£327 GBP
View
A
Retailer 9
-
£373 GBP
$500 USD
View
B+
Retailer 10
-
£437 GBP
A$903 AUD
View
B+
Retailer 11
-
£463 GBP
$621 USD
View
B+
Retailer 12
-
£555 GBP
$745 USD
View
B
Retailer 13
-
£617 GBP
$828 USD
View
B
Retailer 14
-
£671 GBP
$900 USD
View
B
Retailer 15
-
£839 GBP
View
Most Expensive
B
Reve Diamonds
148CC4C3D · Nov 1
£876 GBP
$1,175 USD
View
15 more retailers have this diamond
Prices start from £162 GBPSave up to £714 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
£162 GBP