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Cushion|Natural|IGI

1.30ct E SI2 Cushion Natural Diamond

EX • E/SI2 • IGI 174

Certificate IGI 174

Diamond specifications and retailer prices

From $2,134 AUD
$1,499 USD
As of October 28, 2026
Save $1,688 AUD (44%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $3,822 AUD at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 2 retailers as of October 28, 2026, with prices from $2,134 to $3,822, a $1,688 spread on the same certified stone. Helzberg Diamonds lists it at $3,822. 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

1.30
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabIGI
CertificateIGI 174
Dimensions6.54 × 5.78 mm
L/W Ratio1.13
Top View
6.54 mm5.78 mm1.30 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 174
Side View
Table 61.0%CrownGirdle: THN-THKPavilionCuletDepth 69.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: $3,822 AUD|Low: $2,134 AUD|High: $3,983 AUD|Avg: $3,036 AUD|-4.0%
Helzberg Diamonds
Retailer 2
October 28, 2026
Retailer 2$2,134 AUD
Helzberg Diamonds$3,822 AUD

5 data points across 2 retailers

2 retailers$2,134 AUD to $3,822 AUD

A
Cheapest Retailer
-
$2,134 AUD
$1,499 USD
Most Expensive
B+
Helzberg Diamonds
ZXZNPPMNLGPI · Oct 30
$3,822 AUD
$2,685 USD
View
1 more retailer has this diamond
Prices start from $2,134 AUDSave up to $1,688 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
1.30ct Cushion
$2,134 AUD