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Cushion|Natural|GIA

1.30ct I SI2 Cushion Natural Diamond

ID • I/SI2 • GIA 1558676361

Certificate GIA 1558676361

Diamond specifications and retailer prices

From $3,557 AUD
As of November 6, 2026
Save $1,915 AUD (35%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $5,472 AUD at 77 Diamonds · As of November 5, 2026
View at 77 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558676361. Listed at 5 retailers as of November 5, 2026, with prices from $3,557 to $5,472, a $1,915 spread on the same certified stone. 77 Diamonds lists it at $5,472. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1558676361
Dimensions7.48 × 5.76 × 3.84 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Top View
7.48 mm5.76 mm1.30 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558676361
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $5,472 AUD|Low: $3,148 AUD|High: $7,308 AUD|Avg: $4,414 AUD|+21.9%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 6$3,307 AUD
Retailer 3$3,557 AUD
Retailer 8$3,590 AUD
Retailer 5$3,736 AUD
Retailer 7$3,838 AUD
Retailer 4$3,861 AUD
Retailer 2$3,924 AUD
Retailer 9$4,959 AUD
77 Diamonds$5,472 AUD
Retailer 10$7,308 AUD

41 data points across 10 retailers

5 retailers$3,557 AUD to $5,472 AUD

A
Cheapest Retailer
-
$3,557 AUD
A
Retailer 2
-
$3,736 AUD
View
A
Retailer 3
-
$3,861 AUD
View
A
Retailer 4
-
$3,924 AUD
View
Most Expensive
B
77 Diamonds
CUSMB7BKJHCVZ · Nov 5
$5,472 AUD
£2,960 GBP
View
4 more retailers have this diamond
Prices start from $3,557 AUDSave up to $1,915 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
$3,557 AUD