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Cushion|Natural|GIA

1.30ct J SI2 Cushion Natural Diamond

J/SI2 • GIA 3565400574

Certificate GIA 3565400574

Diamond specifications and retailer prices

From $2,934 AUD
HK$16,100 HKD
As of November 1, 2026
Save $1,280 AUD (30%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,214 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

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 J colour (near-colourless) and SI2 clarity (slightly-included) and certified by GIA 3565400574. Listed at 7 retailers as of October 31, 2026, with prices from $2,934 to $4,214, a $1,280 spread on the same certified stone. Blue Nile lists it at $4,214. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.30
Carat
J
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3565400574
Dimensions7.92 × 5.59 × 3.69 mm
L/W Ratio1.42
Top View
7.92 mm5.59 mm1.30 ctJ / SI2
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3565400574
Side View
Table 62.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 66.1%

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 1
Current: $4,214 AUD|Low: $2,916 AUD|High: $4,392 AUD|Avg: $3,519 AUD|-1.2%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 3$2,934 AUD
Retailer 2$2,964 AUD
Retailer 5$3,126 AUD
Retailer 7$3,417 AUD
Retailer 8$3,559 AUD
Retailer 6$3,737 AUD
Retailer 4$4,085 AUD
Blue Nile$4,214 AUD

30 data points across 8 retailers

7 retailers$2,934 AUD to $4,214 AUD

A
Cheapest Retailer
-
$2,934 AUD
HK$16,100 HKD
A
Retailer 2
-
$2,964 AUD
₹198,280 INR
View
B+
Retailer 3
-
$3,126 AUD
$2,196 USD
View
Final sale: no returns
B+
Retailer 4
-
$3,417 AUD
$2,400 USD
View
B+
Retailer 5
-
$3,737 AUD
$2,625 USD
View
B
Retailer 6
-
$4,085 AUD
SGD 3,878 SGD
View
Most Expensive
B
Blue Nile
30380811 · Oct 31
$4,214 AUD
$2,960 USD
View
6 more retailers have this diamond
Prices start from $2,934 AUDSave up to $1,280 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
$2,934 AUD