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Cushion|Lab Grown|IGI

1.50ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG836616360

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836616360

Diamond specifications and retailer prices

From $639 AUD
£354 GBP
As of October 30, 2026
Save $3,431 AUD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,071 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.5ct lab-grown cushion diamond

This 1.5ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836616360 or 836616360. Listed at 16 retailers as of October 29, 2026, with prices from $639 to $4,071, a $3,431 spread on the same certified stone. Brilliant Earth lists it at $4,071. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836616360
Dimensions8.51 × 5.81 × 3.70 mm
L/W Ratio1.46
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
8.51 mm5.81 mm1.50 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836616360
Side View
Table 61.0%Crown 35°Girdle: STK-THKPavilion 32°Culet: NoneDepth 63.7%

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 30
Current: $4,071 AUD|Low: $637 AUD|High: $4,071 AUD|Avg: $1,913 AUD
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 2$639 AUD
Retailer 15$939 AUD
Retailer 16$981 AUD
Retailer 4$995 AUD
Retailer 14$1,064 AUD
Retailer 9$1,114 AUD
Retailer 10$1,242 AUD
Retailer 12$1,437 AUD
Retailer 5$1,455 AUD
Retailer 6$2,050 AUD
Retailer 13$2,164 AUD
Retailer 11$2,433 AUD
Retailer 8$2,566 AUD
Retailer 7$3,408 AUD
Retailer 3$3,409 AUD
Brilliant Earth$4,071 AUD

11 data points across 16 retailers

16 retailers$639 AUD to $4,071 AUD

A
Cheapest Retailer
-
$639 AUD
£354 GBP
A
Retailer 2
-
$939 AUD
$660 USD
View
A
Retailer 3
-
$981 AUD
$689 USD
View
A
Retailer 4
-
$995 AUD
$699 USD
View
A
Retailer 5
-
$1,064 AUD
ZAR 12,076 ZAR
View
A
Retailer 6
-
$1,114 AUD
£616 GBP
View
A
Retailer 7
-
$1,242 AUD
€831 EUR
View
A
Retailer 8
-
$1,437 AUD
View
A
Retailer 9
-
$1,455 AUD
$1,022 USD
View
B+
Retailer 10
-
$2,050 AUD
$1,440 USD
View
B+
Retailer 11
-
$2,164 AUD
$1,520 USD
View
B+
Retailer 12
-
$2,433 AUD
£1,346 GBP
View
B+
Retailer 13
-
$2,566 AUD
SGD 2,436 SGD
View
B
Retailer 14
-
$3,408 AUD
$2,394 USD
View
Retailer 15
-
$3,409 AUD
$2,395 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
22192118A · Oct 29
$4,071 AUD
$2,860 USD
View
15 more retailers have this diamond
Prices start from $639 AUDSave up to $3,431 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
1.50ct Cushion
$639 AUD