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Cushion|Natural|GIA

1.30ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 1558124148

Certificate GIA 1558124148

Diamond specifications and retailer prices

From $4,042 AUD
As of November 6, 2026
Save $4,790 AUD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,018 AUD at Queensmith · As of October 28, 2026
View at Queensmith

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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558124148. Listed at 18 retailers as of November 6, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1558124148
Dimensions7.19 × 5.54 × 3.82 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Indented Natural, Needle, Natural
Top View
7.19 mm5.54 mm1.30 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1558124148
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.8%

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: $10,018 AUD|Low: $4,005 AUD|High: $10,231 AUD|Avg: $5,890 AUD|+0.8%
Queensmith
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
November 7, 2026
Retailer 5$4,042 AUD
Retailer 10$4,203 AUD
Retailer 7$4,816 AUD
Retailer 6$4,857 AUD
Retailer 4$4,900 AUD
Retailer 14$4,953 AUD
Retailer 9$5,108 AUD
Retailer 8$5,494 AUD
Retailer 15$5,520 AUD
Retailer 3$5,603 AUD
Retailer 12$5,628 AUD
Retailer 11$6,181 AUD
Retailer 13$6,481 AUD
Retailer 2$8,831 AUD
Queensmith$10,018 AUD

26 data points across 15 retailers

18 retailers$4,042 AUD to $8,831 AUD

A
Cheapest Retailer
-
$4,042 AUD
A
Retailer 2
-
$4,203 AUD
View
A
Retailer 3
-
$4,816 AUD
View
A
Retailer 4
-
$4,857 AUD
View
A
Retailer 5
-
$4,900 AUD
View
Final sale: no returns
A
Retailer 6
-
$4,953 AUD
View
A
Retailer 7
-
$5,108 AUD
View
B+
Retailer 8
-
$5,167 AUD
View
B+
Retailer 9
-
$5,494 AUD
View
B+
Retailer 10
-
$5,520 AUD
View
B+
Retailer 11
-
$5,603 AUD
View
B+
Retailer 12
-
$5,628 AUD
View
B+
Retailer 13
-
$5,816 AUD
View
Retailer 14
-
$6,028 AUD
View
Price last confirmed 30 days ago
B+
Retailer 15
-
$6,181 AUD
View
B+
Retailer 16
-
$6,481 AUD
View
B
Retailer 17
-
$8,831 AUD
View
Most Expensive
Queensmith
1558124148 · Oct 28
$10,018 AUD
£5,420 GBP
View
Price last confirmed 9 days ago
17 more retailers have this diamond
Prices start from $4,042 AUDSave up to $4,790 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
$4,042 AUD