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Marquise|Lab Grown|IGI

1.54ct I SI1 Marquise Lab Grown Diamond

ID • I/SI1 • IGI LG500143696

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG500143696

Diamond specifications and retailer prices

From £687 GBP
$920 USD
As of October 31, 2026
Save £3,012 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,698 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.54ct lab-grown marquise diamond

This 1.54ct lab-grown marquise sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG500143696 or 500143696. Listed at 10 retailers as of October 31, 2026, with prices from £687 to £3,698, a £3,012 spread on the same certified stone. MOH London lists it at £3,698. 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

1.54
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.2°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500143696
Dimensions11.27 × 5.96 × 3.78 mm
L/W Ratio1.89
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
11.27 mm5.96 mm1.54 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500143696
Side View
Table 59.5%Crown 39.2°Girdle: STK-VTKPavilion 38.3°Culet: NoneDepth 63.4%

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: Oct 31
Current: £3,698 GBP|Low: £687 GBP|High: £3,743 GBP|Avg: £1,764 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2£687 GBP
Retailer 3£993 GBP
Retailer 4£1,151 GBP
Retailer 6£1,280 GBP
Retailer 8£1,583 GBP
Retailer 5£1,820 GBP
Retailer 7£2,146 GBP
MOH London£3,698 GBP

14 data points across 8 retailers

10 retailers£687 GBP to £3,698 GBP

A
Cheapest Retailer
-
£687 GBP
$920 USD
B+
Retailer 2
-
£993 GBP
$1,330 USD
View
B+
Retailer 3
-
£1,080 GBP
$1,447 USD
View
Retailer 4
-
£1,151 GBP
$1,542 USD
View
Price last confirmed 20 days ago
B+
Retailer 5
-
£1,151 GBP
$1,542 USD
View
B+
Retailer 6
-
£1,280 GBP
$1,715 USD
View
B
Retailer 7
-
£1,820 GBP
$2,439 USD
View
B
Retailer 8
-
£2,146 GBP
$2,875 USD
View
B
Retailer 9
-
£2,158 GBP
$2,891 USD
View
Most Expensive
B
MOH London
LG500143696 · Nov 1
£3,698 GBP
View
9 more retailers have this diamond
Prices start from £687 GBPSave up to £3,012 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
1.54ct Marquise
£687 GBP