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Cushion|Natural|GIA

1.31ct E SI1 Cushion Natural Diamond

GD • E/SI1 • GIA 2536811591

Certificate GIA 2536811591

Diamond specifications and retailer prices

From $4,247 AUD
As of November 6, 2026
Save $3,736 AUD (47%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,983 AUD at With Clarity · As of November 6, 2026
View at With Clarity

About this 1.31ct natural cushion diamond

This 1.31ct natural cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2536811591. Listed at 8 retailers as of November 6, 2026, with prices from $4,247 to $7,983, a $3,736 spread on the same certified stone. With Clarity lists it at $7,983. 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

1.31
Carat
E
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2536811591
Dimensions6.59 × 6.20 × 4.25 mm
L/W Ratio1.06
Top View
6.59 mm6.20 mm1.31 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2536811591
Side View
Table 62.0%CrownGirdle: ThickPavilionCulet: NoneDepth 68.5%

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: $5,062 AUD|Low: $4,209 AUD|High: $7,983 AUD|Avg: $5,763 AUD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
With Clarity
November 5, 2026
Retailer 2$4,247 AUD
Retailer 7$5,059 AUD
Retailer 1$5,062 AUD
Retailer 3$5,293 AUD
Retailer 6$5,347 AUD
Retailer 4$5,836 AUD
Retailer 5$6,034 AUD
Retailer 8$6,362 AUD
Retailer 9$6,442 AUD
With Clarity$7,983 AUD

10 data points across 10 retailers

8 retailers$4,247 AUD to $7,983 AUD

A
Cheapest Retailer
-
$4,247 AUD
A
Retailer 2
-
$5,059 AUD
View
A
Retailer 3
-
$5,062 AUD
View
A
Retailer 4
-
$5,293 AUD
View
Final sale: no returns
B+
Retailer 5
-
$5,347 AUD
View
B+
Retailer 6
-
$5,836 AUD
View
B+
Retailer 7
-
$6,034 AUD
View
Most Expensive
B
With Clarity
2536811591 · Nov 6
$7,983 AUD
$5,485 USD
View
7 more retailers have this diamond
Prices start from $4,247 AUDSave up to $3,736 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
1.31ct Cushion
$4,247 AUD