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Marquise|Lab Grown|IGI

1.50ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG761509822

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG761509822

Diamond specifications and retailer prices

From $439 USD
As of November 1, 2026
Save $747 USD (63%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,186 USD 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG761509822 or 761509822. Listed at 6 retailers as of November 1, 2026, with prices from $439 to $1,186, a $747 spread on the same certified stone. MOH London lists it at $1,186. 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
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG761509822
Dimensions11.54 × 5.99 × 3.66 mm
L/W Ratio1.93
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.54 mm5.99 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG761509822
Side View
Table 62.0%Crown 32.7°Girdle: STK-THKPavilion 40.3°Culet: NoneDepth 61.1%

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 1
Current: $1,186 USD|Low: $421 USD|High: $1,187 USD|Avg: $663 USD|+14.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 6$439 USD
Retailer 3$451 USD
Retailer 2$467 USD
Retailer 4$584 USD
Retailer 5$869 USD
MOH London$1,186 USD

41 data points across 6 retailers

6 retailers$439 USD to $1,186 USD

B+
Cheapest Retailer
-
$439 USD
A
Retailer 2
-
$451 USD
View
A
Retailer 3
-
$467 USD
£368 GBP
View
B+
Retailer 4
-
$584 USD
View
B
Retailer 5
-
$869 USD
View
Most Expensive
B
MOH London
LG761509822 · Nov 1
$1,186 USD
£934 GBP
View
5 more retailers have this diamond
Prices start from $439 USDSave up to $747 USD

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
$439 USD