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Marquise|Lab Grown|IGI

0.50ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG539215674

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG539215674

Diamond specifications and retailer prices

From £92 GBP
$123 USD
As of November 2, 2026
Save £613 GBP (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £944 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.5ct lab-grown marquise diamond

This 0.5ct lab-grown marquise sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG539215674 or 539215674. Listed at 16 retailers as of November 1, 2026, with a 669% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.50
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.2°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG539215674
Dimensions7.96 × 4.16 × 2.65 mm
L/W Ratio1.91
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
7.96 mm4.16 mm0.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG539215674
Side View
Table 57.0%Crown 30.2°Girdle: STK-THKPavilion 41.2°Culet: NoneDepth 63.7%

Caratlytics Score

How it works →
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: £944 GBP|Low: £88 GBP|High: £957 GBP|Avg: £266 GBP|-1.1%
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
November 2, 2026
Retailer 9£92 GBP
Retailer 5£101 GBP
Retailer 13£106 GBP
Retailer 3£121 GBP
Retailer 10£121 GBP
Retailer 6£209 GBP
Retailer 12£218 GBP
Retailer 2£232 GBP
Retailer 7£273 GBP
Retailer 4£282 GBP
Retailer 11£364 GBP
Retailer 8£405 GBP
MOH London£944 GBP

43 data points across 13 retailers

16 retailers£92 GBP to £705 GBP

A
Cheapest Retailer
-
£92 GBP
$123 USD
A
Retailer 2
-
£101 GBP
$136 USD
View
Final sale: no returns
A
Retailer 3
-
£106 GBP
$142 USD
View
A
Retailer 4
-
£121 GBP
$162 USD
View
Retailer 5
-
£121 GBP
$162 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£209 GBP
$280 USD
View
B+
Retailer 7
-
£218 GBP
$293 USD
View
B
Retailer 8
-
£229 GBP
HK$2,400 HKD
View
B
Retailer 9
-
£232 GBP
View
B
Retailer 10
-
£273 GBP
View
B
Retailer 11
-
£282 GBP
$379 USD
View
B
Retailer 12
-
£364 GBP
$488 USD
View
B
Retailer 13
-
£405 GBP
$544 USD
View
B
Retailer 14
-
£406 GBP
$545 USD
View
B
Retailer 15
-
£705 GBP
$946 USD
View
Most Expensive
MOH London
LG539215674 · Nov 1
£944 GBP
View
Price under review
15 more retailers have this diamond
Prices start from £92 GBPSave up to £613 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
0.50ct Marquise
£92 GBP