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Cushion|Lab Grown|IGI

0.73ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG464188651

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG464188651

Diamond specifications and retailer prices

From $394 AUD
$277 USD
As of October 28, 2026
Save $1,294 AUD (77%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,688 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 0.73ct lab-grown cushion diamond

This 0.73ct lab-grown cushion sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG464188651 or 464188651. Listed at 3 retailers as of October 28, 2026, with prices from $394 to $1,688, a $1,294 spread on the same certified stone. MOH London lists it at $1,688. 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

0.73
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG464188651
Dimensions5.27 × 5.22 × 3.63 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process.
Top View
5.27 mm5.22 mm0.73 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG464188651
Side View
Table 58.5%Crown 35.1°Girdle: MED-VTKPavilion 41.5°Culet: NoneDepth 69.5%

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 28
Current: $1,688 AUD|Low: $273 AUD|High: $1,701 AUD|Avg: $904 AUD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 3$394 AUD
Retailer 2$408 AUD
Retailer 4$968 AUD
Retailer 5$1,025 AUD
Retailer 6$1,025 AUD
MOH London$1,688 AUD

35 data points across 6 retailers

3 retailers$394 AUD to $1,688 AUD

A
Cheapest Retailer
-
$394 AUD
$277 USD
A
Retailer 2
-
$408 AUD
£226 GBP
View
Most Expensive
B
MOH London
LG464188651 · Oct 29
$1,688 AUD
£934 GBP
View
2 more retailers have this diamond
Prices start from $394 AUDSave up to $1,294 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
0.73ct Cushion
$394 AUD