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Cushion|Lab Grown|IGI

1.53ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • IGI LG12746517

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG12746517

Diamond specifications and retailer prices

From $1,172 AUD
As of November 5, 2026
Save $378 AUD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,550 AUD at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 1.53ct lab-grown cushion diamond

This 1.53ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG12746517 or 12746517. Listed at 2 retailers as of November 5, 2026, with prices from $1,172 to $1,550, a $378 spread on the same certified stone. The Diamond Guys lists it at $1,550. 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

1.53
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12746517
Dimensions6.61 × 6.40 × 4.25 mm
L/W Ratio1.03
Culet sizePointed
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by High Pressure High Tempertature (HPHT) growth process.
Top View
6.61 mm6.40 mm1.53 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12746517
Side View
Table 62.5%Crown 35°Girdle: STK-UNDPavilion 34.7°Culet: NoneDepth 66.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: $738 AUD|Low: $556 AUD|High: $4,596 AUD|Avg: $2,002 AUD|-59.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
The Diamond Guys
September 18, 2026
Retailer 4$572 AUD
Retailer 2$610 AUD
Retailer 1$738 AUD
Retailer 5$856 AUD
Retailer 3$1,172 AUD
The Diamond Guys$1,550 AUD
Retailer 6$2,083 AUD

49 data points across 7 retailers

2 retailers$1,172 AUD to $1,550 AUD

B+
Cheapest Retailer
-
$1,172 AUD
Most Expensive
B
The Diamond Guys
1779252864 · Nov 6
$1,550 AUD
$1,065 USD
View
1 more retailer has this diamond
Prices start from $1,172 AUDSave up to $378 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.

B+
1.53ct Cushion
$1,172 AUD