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Cushion|Lab Grown|IGI

1.65ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG836620508

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836620508

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)
15 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 LG836620508 or 836620508. Listed at 15 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 angle32.6°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836620508
Dimensions8.80 × 5.94 × 4.01 mm
L/W Ratio1.48
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
8.80 mm5.94 mm1.65 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836620508
Side View
Table 63.0%Crown 32.6°Girdle: MED-THKPavilion 34.7°Culet: NoneDepth 67.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
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: $2,627 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
October 31, 2026
Retailer 15$911 AUD
Retailer 7$1,076 AUD
Retailer 10$1,182 AUD
Retailer 4$1,533 AUD
Retailer 9$1,553 AUD
Retailer 8$1,599 AUD
Retailer 12$1,711 AUD
Retailer 13$1,824 AUD
Retailer 5$2,241 AUD
Retailer 3$2,907 AUD
Retailer 2$3,190 AUD
Retailer 14$3,227 AUD
Retailer 6$4,342 AUD
Retailer 11$4,345 AUD
Brilliant Earth$4,826 AUD

31 data points across 15 retailers

15 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
-
$1,182 AUD
$830 USD
View
A
Retailer 4
-
$1,533 AUD
$1,077 USD
View
A
Retailer 5
-
$1,553 AUD
£859 GBP
View
A
Retailer 6
-
$1,599 AUD
€1,070 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
-
$3,190 AUD
$2,241 USD
View
B+
Retailer 12
-
$3,227 AUD
$2,266 USD
View
Retailer 13
-
$4,342 AUD
$3,050 USD
View
Price last confirmed 10 days ago
B+
Retailer 14
-
$4,345 AUD
£2,403 GBP
View
Most Expensive
B
Brilliant Earth
21589063A · Oct 30
$4,826 AUD
$3,390 USD
View
14 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