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Cushion|Natural|GIA

1.00ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 6425709135

Certificate GIA 6425709135

Diamond specifications and retailer prices

From $1,701 AUD
As of November 6, 2026
Save $1,751 AUD (51%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,453 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6425709135. Listed at 10 retailers as of November 4, 2026, with prices from $1,701 to $3,453, a $1,751 spread on the same certified stone. MOH London lists it at $3,453. 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

1.00
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6425709135
Dimensions5.48 × 5.41 × 3.74 mm
L/W Ratio1.01
Top View
5.48 mm5.41 mm1.00 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6425709135
Side View
Table 57.0%CrownGirdle: VTK-XTKPavilionCulet: NoneDepth 69.1%

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 6
Current: $3,453 AUD|Low: $1,701 AUD|High: $3,503 AUD|Avg: $2,098 AUD|-1.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$1,701 AUD
Retailer 2$1,729 AUD
Retailer 8$1,744 AUD
Retailer 10$1,751 AUD
Retailer 3$1,859 AUD
Retailer 6$1,891 AUD
Retailer 9$2,016 AUD
Retailer 5$2,123 AUD
Retailer 4$2,623 AUD
MOH London$3,453 AUD

29 data points across 10 retailers

10 retailers$1,701 AUD to $3,453 AUD

A
Cheapest Retailer
-
$1,701 AUD
A
Retailer 2
-
$1,729 AUD
View
A
Retailer 3
-
$1,744 AUD
View
Final sale: no returns
A
Retailer 4
-
$1,751 AUD
View
A
Retailer 5
-
$1,859 AUD
View
Retailer 6
-
$1,891 AUD
View
Price last confirmed 9 days ago
A
Retailer 7
-
$2,016 AUD
View
A
Retailer 8
-
$2,123 AUD
View
B+
Retailer 9
-
$2,623 AUD
View
Most Expensive
B+
MOH London
F1C310B20 · Nov 4
$3,453 AUD
£1,868 GBP
View
9 more retailers have this diamond
Prices start from $1,701 AUDSave up to $1,751 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
1.00ct Cushion
$1,701 AUD