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Cushion|Lab Grown|IGI

1.50ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG657466746

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG657466746

Diamond specifications and retailer prices

From $295 AUD
As of November 6, 2026
Save $1,355 AUD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,650 AUD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG657466746 or 657466746. Listed at 15 retailers as of November 6, 2026, with prices from $295 to $1,650, a $1,355 spread on the same certified stone. Reve Diamonds lists it at $1,650. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG657466746
Dimensions8.08 × 5.85 × 3.90 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.08 mm5.85 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG657466746
Side View
Table 65.0%Crown 35.5°Girdle: MED-VTKPavilion 36.4°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: Nov 6
Current: $538 AUD|Low: $295 AUD|High: $1,650 AUD|Avg: $885 AUD|+2.2%
Retailer 1
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
Reve Diamonds
November 6, 2026
Retailer 2$295 AUD
Retailer 7$373 AUD
Retailer 13$421 AUD
Retailer 3$454 AUD
Retailer 1$538 AUD
Retailer 8$582 AUD
Retailer 15$669 AUD
Retailer 5$672 AUD
Retailer 11$802 AUD
Retailer 6$1,074 AUD
Retailer 10$1,106 AUD
Retailer 4$1,129 AUD
Retailer 12$1,324 AUD
Retailer 14$1,352 AUD
Retailer 9$1,524 AUD
Reve Diamonds$1,650 AUD

30 data points across 16 retailers

15 retailers$295 AUD to $1,650 AUD

A
Cheapest Retailer
-
$295 AUD
Final sale: no returns
A
Retailer 2
-
$373 AUD
View
B+
Retailer 3
-
$454 AUD
View
A
Retailer 4
-
$538 AUD
View
A
Retailer 5
-
$582 AUD
View
A
Retailer 6
-
$669 AUD
View
A
Retailer 7
-
$672 AUD
View
B+
Retailer 8
-
$802 AUD
View
B+
Retailer 9
-
$1,074 AUD
View
B+
Retailer 10
-
$1,106 AUD
View
B+
Retailer 11
-
$1,129 AUD
View
B+
Retailer 12
-
$1,324 AUD
View
B
Retailer 13
-
$1,352 AUD
View
B
Retailer 14
-
$1,524 AUD
View
Most Expensive
B
Reve Diamonds
36585FD7B · Nov 6
$1,650 AUD
$1,134 USD
View
14 more retailers have this diamond
Prices start from $295 AUDSave up to $1,355 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
$295 AUD