CaratHunter
Plans
Marquise|Lab Grown|IGI

1.31ct F VS1 Marquise Lab Grown Diamond

EX • F/VS1 • IGI LG769673855

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG769673855

Diamond specifications and retailer prices

From £416 GBP
A$858 AUD
As of November 2, 2026
Save £315 GBP (43%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £819 GBP at MOH London · As of October 19, 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 LG769673855 or 769673855. Listed at 17 retailers as of November 2, 2026, with a 76% 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
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG769673855
Dimensions11.72 × 5.74 × 3.53 mm
L/W Ratio2.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.72 mm5.74 mm1.31 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG769673855
Side View
Table 57.0%Crown 32.4°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.5%

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: £819 GBP|Low: £203 GBP|High: £824 GBP|Avg: £469 GBP|+0.6%
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
October 19, 2026
Retailer 13£203 GBP
Retailer 11£244 GBP
Retailer 5£274 GBP
Retailer 9£346 GBP
Retailer 8£353 GBP
Retailer 2£368 GBP
Retailer 6£416 GBP
Retailer 4£442 GBP
Retailer 10£500 GBP
Retailer 12£529 GBP
Retailer 3£559 GBP
Retailer 7£730 GBP
MOH London£819 GBP

30 data points across 13 retailers

17 retailers£416 GBP to £730 GBP

Retailer 1
-
£164 GBP
$220 USD
Price last confirmed 16 days ago
Retailer 2
-
£190 GBP
$255 USD
View
Price last confirmed 18 days ago
Retailer 3
-
£203 GBP
$273 USD
View
Price last confirmed 15 days ago
Retailer 4
-
£203 GBP
$273 USD
View
Price last confirmed 17 days ago
Retailer 5
-
£244 GBP
View
Price last confirmed 16 days ago
Retailer 6
-
£274 GBP
$368 USD
View
Price last confirmed 15 days ago
Retailer 7
-
£346 GBP
ZAR 7,497 ZAR
View
Price last confirmed 15 days ago
Retailer 8
-
£368 GBP
View
Price last confirmed 14 days ago
B+
Retailer 9
-
£416 GBP
A$858 AUD
View
Retailer 10
-
£442 GBP
$593 USD
View
Price last confirmed 14 days ago
Retailer 11
-
£500 GBP
A$1,032 AUD
View
Price last confirmed 15 days ago
Retailer 12
-
£529 GBP
$710 USD
View
Price last confirmed 14 days ago
Retailer 13
-
£559 GBP
A$1,155 AUD
View
Price last confirmed 25 days ago
Retailer 14
-
£653 GBP
$876 USD
View
Price last confirmed 17 days ago
Retailer 15
-
£692 GBP
$929 USD
View
Price last confirmed 15 days ago
B
Retailer 16
-
£730 GBP
$980 USD
View
Most Expensive
MOH London
LG769673855 · Oct 19
£819 GBP
View
Price last confirmed 14 days ago
16 more retailers have this diamond
Prices start from £416 GBPSave up to £315 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
£416 GBP