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Cushion|Natural|GIA

1.30ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 3555596821

Certificate GIA 3555596821

Diamond specifications and retailer prices

From $5,606 AUD
As of November 5, 2026
Save $843 AUD (13%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $10,628 AUD at Queensmith · As of October 11, 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 3555596821. Listed at 12 retailers as of November 5, 2026, with a relatively tight 15% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555596821
Dimensions7.51 × 5.51 × 3.76 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Indented Natural, Needle, Natural
Top View
7.51 mm5.51 mm1.30 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555596821
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $10,628 AUD|Low: $4,768 AUD|High: $10,628 AUD|Avg: $6,681 AUD|+0.4%
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
Retailer 16
November 5, 2026
Retailer 3$4,768 AUD
Retailer 12$5,123 AUD
Retailer 8$5,386 AUD
Retailer 15$5,484 AUD
Retailer 2$5,606 AUD
Retailer 5$5,798 AUD
Retailer 4$5,800 AUD
Retailer 6$6,060 AUD
Retailer 14$6,366 AUD
Retailer 9$6,484 AUD
Retailer 7$6,581 AUD
Retailer 11$6,789 AUD
Retailer 10$7,175 AUD
Retailer 16$7,676 AUD
Retailer 13$10,233 AUD
Queensmith$10,628 AUD

22 data points across 16 retailers

12 retailers$5,606 AUD to $6,449 AUD

Retailer 1
-
$4,768 AUD
Price last confirmed 27 days ago
Retailer 2
-
$5,484 AUD
View
Price last confirmed 30 days ago
B+
Retailer 3
-
$5,606 AUD
View
B+
Retailer 4
-
$5,798 AUD
View
Retailer 5
-
$6,060 AUD
View
Price last confirmed 28 days ago
Retailer 6
-
$6,366 AUD
View
Price last confirmed 30 days ago
B+
Retailer 7
-
$6,449 AUD
View
Retailer 8
-
$6,581 AUD
View
Price last confirmed 29 days ago
Retailer 9
-
$6,789 AUD
View
Price last confirmed 29 days ago
Retailer 10
-
$7,676 AUD
View
Price last confirmed 38 days ago
Retailer 11
-
$10,233 AUD
View
Price last confirmed 30 days ago
Most Expensive
Queensmith
3555596821 · Oct 11
$10,628 AUD
£5,750 GBP
View
Price last confirmed 26 days ago
11 more retailers have this diamond
Prices start from $5,606 AUDSave up to $843 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+
1.30ct Cushion
$5,606 AUD