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Marquise|Lab Grown|IGI

1.56ct E SI2 Marquise Lab Grown Diamond

ID • E/SI2 • IGI LG754519179

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754519179

Diamond specifications and retailer prices

From $622 AUD
$437 USD
As of October 29, 2026
Save $1,108 AUD (64%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,730 AUD at MOH London · As of October 26, 2026
View at MOH London

About this 1.56ct lab-grown marquise diamond

This 1.56ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG754519179 or 754519179. Listed at 4 retailers as of October 26, 2026, with prices from $622 to $1,730, a $1,108 spread on the same certified stone. MOH London lists it at $1,730. 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

1.56
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754519179
Dimensions11.73 × 6.25 × 3.84 mm
L/W Ratio1.88
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.73 mm6.25 mm1.56 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754519179
Side View
Table 61.0%Crown 32.9°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $1,730 AUD|Low: $622 AUD|High: $1,748 AUD|Avg: $918 AUD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 4$622 AUD
Retailer 3$717 AUD
Retailer 2$809 AUD
MOH London$1,730 AUD

41 data points across 4 retailers

4 retailers$622 AUD to $1,730 AUD

A
Cheapest Retailer
-
$622 AUD
$437 USD
A
Retailer 2
-
$717 AUD
$504 USD
View
B+
Retailer 3
-
$809 AUD
£448 GBP
View
Most Expensive
B
MOH London
LG754519179 · Oct 26
$1,730 AUD
£957 GBP
View
3 more retailers have this diamond
Prices start from $622 AUDSave up to $1,108 AUD

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
1.56ct Marquise
$622 AUD