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Marquise|Lab Grown|IGI

1.50ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG826679586

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG826679586

Diamond specifications and retailer prices

From £219 GBP
HK$2,300 HKD
As of November 1, 2026
Save £547 GBP (71%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £767 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.5ct lab-grown marquise diamond

This 1.5ct lab-grown marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG826679586 or 826679586. Listed at 9 retailers as of November 1, 2026, with prices from £219 to £767, a £547 spread on the same certified stone. MOH London lists it at £767. 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

1.50
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.6°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG826679586
Dimensions11.75 × 5.46 × 3.62 mm
L/W Ratio2.15
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.75 mm5.46 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG826679586
Side View
Table 62.0%Crown 38.6°Girdle: STK-THKPavilion 39.6°Culet: NoneDepth 66.3%

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 1
Current: £767 GBP|Low: £219 GBP|High: £784 GBP|Avg: £423 GBP|-1.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8£219 GBP
Retailer 6£257 GBP
Retailer 3£334 GBP
Retailer 9£344 GBP
Retailer 2£349 GBP
Retailer 5£382 GBP
Retailer 7£654 GBP
Retailer 4£678 GBP
MOH London£767 GBP

42 data points across 9 retailers

9 retailers£219 GBP to £767 GBP

A
Cheapest Retailer
-
£219 GBP
HK$2,300 HKD
B+
Retailer 2
-
£257 GBP
$345 USD
View
A
Retailer 3
-
£334 GBP
€427 EUR
View
A
Retailer 4
-
£344 GBP
$461 USD
View
A
Retailer 5
-
£349 GBP
View
B+
Retailer 6
-
£382 GBP
$512 USD
View
B
Retailer 7
-
£654 GBP
$878 USD
View
B
Retailer 8
-
£678 GBP
$910 USD
View
Most Expensive
B
MOH London
LG826679586 · Nov 1
£767 GBP
View
8 more retailers have this diamond
Prices start from £219 GBPSave up to £547 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
1.50ct Marquise
£219 GBP