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Cushion|Lab Grown|IGI

1.65ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG825660149

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG825660149

Diamond specifications and retailer prices

From $911 AUD
$640 USD
As of October 30, 2026
Save $3,915 AUD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,826 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.65ct lab-grown cushion diamond

This 1.65ct 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 LG825660149 or 825660149. Listed at 16 retailers as of October 30, 2026, with prices from $911 to $4,826, a $3,915 spread on the same certified stone. Brilliant Earth lists it at $4,826. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.65
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825660149
Dimensions8.96 × 5.79 × 4.09 mm
L/W Ratio1.55
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 Type II
Top View
8.96 mm5.79 mm1.65 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825660149
Side View
Table 62.0%Crown 34.4°Girdle: STK-THKPavilion 38.1°Culet: NoneDepth 70.6%

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: $4,826 AUD|Low: $911 AUD|High: $6,150 AUD|Avg: $2,790 AUD|-21.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 16$911 AUD
Retailer 8$1,076 AUD
Retailer 13$1,146 AUD
Retailer 4$1,533 AUD
Retailer 9$1,553 AUD
Retailer 10$1,610 AUD
Retailer 12$1,711 AUD
Retailer 14$1,824 AUD
Retailer 5$2,241 AUD
Retailer 3$2,907 AUD
Retailer 15$3,227 AUD
Retailer 6$3,319 AUD
Retailer 2$3,482 AUD
Retailer 7$4,342 AUD
Retailer 11$4,345 AUD
Brilliant Earth$4,826 AUD

31 data points across 16 retailers

16 retailers$911 AUD to $4,826 AUD

A
Cheapest Retailer
-
$911 AUD
$640 USD
Final sale: no returns
Retailer 2
-
$1,076 AUD
$756 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
$1,146 AUD
$805 USD
View
A
Retailer 4
-
$1,533 AUD
$1,077 USD
View
A
Retailer 5
-
$1,553 AUD
£859 GBP
View
A
Retailer 6
-
$1,610 AUD
€1,077 EUR
View
A
Retailer 7
-
$1,711 AUD
ZAR 19,413 ZAR
View
A
Retailer 8
-
$1,824 AUD
$1,281 USD
View
A
Retailer 9
-
$2,241 AUD
$1,574 USD
View
B+
Retailer 10
-
$2,907 AUD
£1,608 GBP
View
B+
Retailer 11
-
$3,227 AUD
$2,266 USD
View
B+
Retailer 12
-
$3,319 AUD
SGD 3,151 SGD
View
B+
Retailer 13
-
$3,482 AUD
$2,446 USD
View
Retailer 14
-
$4,342 AUD
$3,050 USD
View
Price last confirmed 10 days ago
B+
Retailer 15
-
$4,345 AUD
£2,403 GBP
View
Most Expensive
B
Brilliant Earth
21434379A · Oct 30
$4,826 AUD
$3,390 USD
View
15 more retailers have this diamond
Prices start from $911 AUDSave up to $3,915 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
1.65ct Cushion
$911 AUD