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Cushion|Lab Grown|IGI

1.50ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG541250559

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG541250559

Diamond specifications and retailer prices

From $1,485 AUD
$1,020 USD
As of November 6, 2026
1 retailer carries this diamond
Only listing: $1,485 AUD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG541250559 or 541250559. Listed at a single retailer as of November 6, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG541250559
Dimensions7.40 × 6.14 × 4.15 mm
L/W Ratio1.21
Girdle conditionFaceted
Culet sizePointed
Top View
7.40 mm6.14 mm1.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG541250559
Side View
Table 60.0%Crown 36.7°Girdle: STK-THKPavilion 37.4°Culet: NoneDepth 67.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $1,485 AUD|Low: $215 AUD|High: $2,474 AUD|Avg: $980 AUD|-16.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
July 26, 2026
Retailer 9$282 AUD
Retailer 3$483 AUD
Retailer 7$585 AUD
Retailer 4$627 AUD
Retailer 6$760 AUD
Retailer 8$847 AUD
Retailer 5$1,054 AUD
Retailer 10$1,189 AUD
Brilliant Earth$1,485 AUD
Retailer 2$2,212 AUD

61 data points across 10 retailers

1 retailer

B
Brilliant Earth
6534688B · Nov 6
$1,485 AUD
$1,020 USD
View

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
1.50ct Cushion
$1,485 AUD