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Cushion|Natural|GIA

1.31ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 1545944738

Certificate GIA 1545944738

Diamond specifications and retailer prices

From $6,375 AUD
As of November 6, 2026
Save $6,333 AUD (50%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $12,707 AUD at MOH London · As of November 7, 2026
View at MOH London

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545944738. Listed at 21 retailers as of November 6, 2026, with prices from $6,375 to $12,707, a $6,333 spread on the same certified stone. MOH London lists it at $12,707. 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.89°
OriginNatural
Grading LabGIA
CertificateGIA 1545944738
Dimensions7.12 × 5.60 × 3.91 mm
L/W Ratio1.27
Key to symbols
Crystal, Feather, Needle
Top View
7.12 mm5.60 mm1.31 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545944738
Side View
Table 61.0%CrownGirdle: STK-VTKPavilion 35.89°Culet: NoneDepth 69.8%

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: $12,707 AUD|Low: $6,283 AUD|High: $12,929 AUD|Avg: $9,173 AUD|-1.6%
MOH London
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
November 7, 2026
Retailer 6$7,251 AUD
Retailer 14$7,565 AUD
Retailer 2$7,594 AUD
Retailer 13$7,856 AUD
Retailer 10$8,350 AUD
Retailer 3$8,390 AUD
Retailer 7$8,684 AUD
Retailer 4$8,951 AUD
Retailer 15$8,951 AUD
Retailer 9$9,220 AUD
Retailer 5$9,256 AUD
Retailer 11$9,421 AUD
Retailer 12$10,579 AUD
Retailer 8$10,598 AUD
MOH London$12,707 AUD

45 data points across 15 retailers

21 retailers$6,375 AUD to $12,707 AUD

A
Cheapest Retailer
-
$6,375 AUD
B+
Retailer 2
-
$6,851 AUD
View
B+
Retailer 3
-
$6,853 AUD
View
B+
Retailer 4
-
$6,938 AUD
View
B+
Retailer 5
-
$7,251 AUD
View
Final sale: no returns
B+
Retailer 6
-
$7,364 AUD
View
B+
Retailer 7
-
$7,565 AUD
View
B+
Retailer 8
-
$7,594 AUD
View
B+
Retailer 9
-
$7,856 AUD
View
B+
Retailer 10
-
$8,350 AUD
View
B
Retailer 11
-
$8,390 AUD
View
Retailer 12
-
$8,684 AUD
View
Price last confirmed 29 days ago
B+
Retailer 13
-
$8,951 AUD
View
B+
Retailer 14
-
$8,951 AUD
View
B
Retailer 15
-
$9,220 AUD
View
B
Retailer 16
-
$9,256 AUD
View
B+
Retailer 17
-
$9,421 AUD
View
Retailer 18
-
$9,563 AUD
View
Price last confirmed 15 days ago
B
Retailer 19
-
$10,579 AUD
View
B
Retailer 20
-
$10,598 AUD
View
Most Expensive
B
MOH London
23ED74DE8 · Nov 7
$12,707 AUD
£6,875 GBP
View
20 more retailers have this diamond
Prices start from $6,375 AUDSave up to $6,333 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
$6,375 AUD