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Cushion|Lab Grown|IGI

1.55ct E SI1 Cushion Lab Grown Diamond

GD • E/SI1 • IGI LG821628425

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821628425

Diamond specifications and retailer prices

From $544 AUD
€364 EUR
As of October 29, 2026
Save $931 AUD (63%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,475 AUD at MOH London · As of October 29, 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 standard cut grade and certified by IGI LG821628425 or 821628425. Listed at 5 retailers as of October 29, 2026, with prices from $544 to $1,475, a $931 spread on the same certified stone. MOH London lists it at $1,475. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.55
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821628425
Dimensions8.21 × 5.98 × 3.99 mm
L/W Ratio1.37
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.21 mm5.98 mm1.55 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821628425
Side View
Table 62.0%Crown 34.6°Girdle: MED-STKPavilion 37.6°Culet: NoneDepth 66.7%

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 29
Current: $1,475 AUD|Low: $404 AUD|High: $1,564 AUD|Avg: $972 AUD|-4.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 3$404 AUD
Retailer 2$544 AUD
Retailer 4$793 AUD
Retailer 5$1,324 AUD
MOH London$1,475 AUD

22 data points across 5 retailers

5 retailers$544 AUD to $1,475 AUD

Retailer 1
-
$404 AUD
£223 GBP
Price last confirmed 13 days ago
A
Retailer 2
-
$544 AUD
€364 EUR
View
B+
Retailer 3
-
$793 AUD
$557 USD
View
Retailer 4
-
$1,324 AUD
SGD 1,257 SGD
View
Price last confirmed 17 days ago
Most Expensive
B
MOH London
LG821628425 · Oct 29
$1,475 AUD
£816 GBP
View
4 more retailers have this diamond
Prices start from $544 AUDSave up to $931 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
$544 AUD