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Cushion|Lab Grown|IGI

1.55ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG549293769

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG549293769

Diamond specifications and retailer prices

From $473 AUD
$332 USD
As of October 30, 2026
Save $1,020 AUD (68%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,564 AUD at MOH London · As of October 21, 2026
View at MOH London

About this 1.55ct lab-grown cushion diamond

This 1.55ct lab-grown cushion 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 LG549293769 or 549293769. Listed at 5 retailers as of October 23, 2026, with a 216% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.55
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG549293769
Dimensions8.26 × 6.02 × 4.07 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.26 mm6.02 mm1.55 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG549293769
Side View
Table 60.0%Crown 32.7°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 67.6%

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 30
Current: $1,564 AUD|Low: $473 AUD|High: $1,575 AUD|Avg: $888 AUD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 24, 2026
Retailer 4$473 AUD
Retailer 2$538 AUD
Retailer 3$696 AUD
Retailer 6$707 AUD
Retailer 5$1,492 AUD
MOH London$1,564 AUD

37 data points across 6 retailers

5 retailers$473 AUD to $1,492 AUD

B+
Cheapest Retailer
-
$473 AUD
$332 USD
A
Retailer 2
-
$538 AUD
$378 USD
View
Retailer 3
-
$696 AUD
£385 GBP
View
Price last confirmed 7 days ago
B
Retailer 4
-
$1,492 AUD
$1,049 USD
View
Most Expensive
MOH London
LG549293769 · Oct 21
$1,564 AUD
£865 GBP
View
Price last confirmed 9 days ago
4 more retailers have this diamond
Prices start from $473 AUDSave up to $1,020 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
1.55ct Cushion
$473 AUD