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Cushion|Natural|GIA

1.31ct E SI1 Cushion Natural Diamond

VG • E/SI1 • GIA 2558438430

Certificate GIA 2558438430

Diamond specifications and retailer prices

From $5,267 AUD
As of November 6, 2026
Save $3,485 AUD (40%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,752 AUD at Steven Stone · As of November 7, 2026
View at Steven Stone

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2558438430. Listed at 8 retailers as of November 6, 2026, with prices from $5,267 to $8,752, a $3,485 spread on the same certified stone. Steven Stone lists it at $8,752. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558438430
Dimensions8.15 × 5.49 × 3.59 mm
L/W Ratio1.48
Top View
8.15 mm5.49 mm1.31 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558438430
Side View
Table 66.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 65.4%

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: $5,292 AUD|Low: $5,216 AUD|High: $8,752 AUD|Avg: $6,129 AUD|-7.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Steven Stone
November 7, 2026
Retailer 6$5,267 AUD
Retailer 2$5,271 AUD
Retailer 1$5,292 AUD
Retailer 5$6,370 AUD
Retailer 4$6,699 AUD
Retailer 7$6,979 AUD
Retailer 3$7,188 AUD
Steven Stone$8,752 AUD

44 data points across 8 retailers

8 retailers$5,267 AUD to $8,752 AUD

A
Cheapest Retailer
-
$5,267 AUD
Final sale: no returns
A
Retailer 2
-
$5,271 AUD
View
A
Retailer 3
-
$5,292 AUD
View
A
Retailer 4
-
$6,370 AUD
View
Retailer 5
-
$6,699 AUD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
$6,979 AUD
View
Retailer 7
-
$7,188 AUD
View
Price last confirmed 7 days ago
Most Expensive
B
Steven Stone
198086379 · Nov 7
$8,752 AUD
£4,735 GBP
View
7 more retailers have this diamond
Prices start from $5,267 AUDSave up to $3,485 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
$5,267 AUD