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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 $5,090 CAD
As of November 6, 2026
Save $1,857 CAD (27%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $6,947 CAD at Blue Nile · As of October 31, 2026
View at Blue Nile

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 7 retailers as of October 31, 2026, with prices from $5,090 to $6,947, a $1,857 spread on the same certified stone. Blue Nile lists it at $6,947. 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
Color
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: $6,947 CAD|Low: $5,041 CAD|High: $6,970 CAD|Avg: $5,919 CAD|-0.3%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$5,090 CAD
Retailer 3$5,095 CAD
Retailer 2$5,117 CAD
Retailer 5$6,157 CAD
Retailer 4$6,475 CAD
Retailer 7$6,745 CAD
Blue Nile$6,947 CAD

44 data points across 7 retailers

7 retailers$5,090 CAD to $6,947 CAD

A
Cheapest Retailer
-
$5,090 CAD
Final sale: no returns
A
Retailer 2
-
$5,095 CAD
View
A
Retailer 3
-
$5,117 CAD
View
A
Retailer 4
-
$6,157 CAD
View
Retailer 5
-
$6,475 CAD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
$6,745 CAD
View
Most Expensive
B+
Blue Nile
30380890 · Oct 31
$6,947 CAD
$4,939 USD
View
6 more retailers have this diamond
Prices start from $5,090 CADSave up to $1,857 CAD

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
$5,090 CAD