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Marquise|Lab Grown|IGI

1.50ct H SI2 Marquise Lab Grown Diamond

ID • H/SI2 • IGI LG436046737

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436046737

Diamond specifications and retailer prices

From £694 GBP
$930 USD
As of October 31, 2026
Save £2,676 GBP (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,371 GBP at MOH London · As of October 29, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436046737 or 436046737. Listed at 10 retailers as of October 29, 2026, with prices from £694 to £3,371, a £2,676 spread on the same certified stone. MOH London lists it at £3,371. 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
H
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046737
Dimensions11.05 × 6.05 × 3.82 mm
L/W Ratio1.83
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
11.05 mm6.05 mm1.50 ctH / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436046737
Side View
Table 55.5%Crown 35.5°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £3,371 GBP|Low: £694 GBP|High: £3,393 GBP|Avg: £1,548 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2£694 GBP
Retailer 3£899 GBP
Retailer 7£978 GBP
Retailer 8£1,008 GBP
Retailer 4£1,043 GBP
Retailer 10£1,475 GBP
Retailer 5£1,655 GBP
Retailer 6£1,956 GBP
Retailer 9£1,999 GBP
MOH London£3,371 GBP

16 data points across 10 retailers

10 retailers£694 GBP to £3,371 GBP

A
Cheapest Retailer
-
£694 GBP
$930 USD
B+
Retailer 2
-
£899 GBP
$1,205 USD
View
B+
Retailer 3
-
£978 GBP
$1,311 USD
View
B+
Retailer 4
-
£1,008 GBP
$1,350 USD
View
Final sale: no returns
Retailer 5
-
£1,043 GBP
$1,398 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
£1,043 GBP
$1,398 USD
View
B
Retailer 7
-
£1,655 GBP
$2,217 USD
View
B
Retailer 8
-
£1,956 GBP
$2,621 USD
View
B
Retailer 9
-
£1,999 GBP
$2,678 USD
View
Most Expensive
B
MOH London
LG436046737 · Oct 29
£3,371 GBP
View
9 more retailers have this diamond
Prices start from £694 GBPSave up to £2,676 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
£694 GBP