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Cushion|Lab Grown|IGI

1.66ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG839648153

Shape and cutting style on the report: Cushion mixed cut

Certificate IGI LG839648153

Diamond specifications and retailer prices

From $2,409 AUD
$1,692 USD
As of November 1, 2026
2 retailers carry this diamond
Most expensive: $4,517 AUD at Brilliance · As of October 5, 2026
View at Brilliance

About this 1.66ct lab-grown cushion diamond

This 1.66ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839648153 or 839648153. Listed at 2 retailers as of November 1, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle50.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839648153
Dimensions8.17 × 5.67 × 3.68 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.17 mm5.67 mm1.66 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839648153
Side View
Table 65.0%Crown 37.1°Girdle: MED-STKPavilion 50.5°Culet: LargeDepth 64.9%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: $4,517 AUD|Low: $2,409 AUD|High: $4,517 AUD|Avg: $3,814 AUD
Brilliance
Retailer 2
October 4, 2026
Retailer 2$2,409 AUD
Brilliance$4,517 AUD

2 data points across 2 retailers

2 retailers

B+
Cheapest Retailer
-
$2,409 AUD
$1,692 USD
Most Expensive
Brilliance
D45626370 · Oct 5
$4,517 AUD
$3,173 USD
View
Price last confirmed 27 days ago
1 more retailer has this diamond
Prices start from $2,409 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.

B+
1.66ct Cushion
$2,409 AUD