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Cushion|Natural|GIA

1.00ct F SI1 Cushion Natural Diamond

VG • F/SI1 • GIA 1428230770

Certificate GIA 1428230770

Diamond specifications and retailer prices

From $2,758 AUD
As of November 5, 2026
Save $3,173 AUD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,931 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded F 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 1428230770. Listed at 20 retailers as of November 2, 2026, with prices from $2,758 to $5,931, a $3,173 spread on the same certified stone. MOH London lists it at $5,931. 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

1.00
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1428230770
Dimensions5.77 × 5.26 × 3.75 mm
L/W Ratio1.10
Key to symbols
Cloud, Feather, Crystal, Needle, Indented Natural
Top View
5.77 mm5.26 mm1.00 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1428230770
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 71.4%

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 5
Current: $5,931 AUD|Low: $2,359 AUD|High: $6,003 AUD|Avg: $3,758 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 10$2,767 AUD
Retailer 3$2,771 AUD
Retailer 7$2,831 AUD
Retailer 9$2,853 AUD
Retailer 6$3,067 AUD
Retailer 2$3,679 AUD
Retailer 5$4,132 AUD
Retailer 8$4,167 AUD
Retailer 4$4,203 AUD
MOH London$5,931 AUD

46 data points across 10 retailers

20 retailers$2,758 AUD to $5,931 AUD

A
Cheapest Retailer
-
$2,758 AUD
A
Retailer 2
-
$2,765 AUD
View
A
Retailer 3
-
$2,767 AUD
View
A
Retailer 4
-
$2,771 AUD
View
A
Retailer 5
-
$2,831 AUD
View
Final sale: no returns
Retailer 6
-
$2,853 AUD
View
Price last confirmed 17 days ago
A
Retailer 7
-
$2,874 AUD
View
A
Retailer 8
-
$2,886 AUD
View
B+
Retailer 9
-
$2,985 AUD
View
Retailer 10
-
$3,067 AUD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$3,100 AUD
View
B+
Retailer 12
-
$3,363 AUD
View
B+
Retailer 13
-
$3,551 AUD
View
B+
Retailer 14
-
$3,551 AUD
View
B+
Retailer 15
-
$3,668 AUD
View
B+
Retailer 16
-
$3,679 AUD
View
B
Retailer 17
-
$4,132 AUD
View
Retailer 18
-
$4,167 AUD
View
Price last confirmed 31 days ago
B
Retailer 19
-
$4,203 AUD
View
Most Expensive
B
MOH London
22B3F1456 · Nov 2
$5,931 AUD
£3,209 GBP
View
19 more retailers have this diamond
Prices start from $2,758 AUDSave up to $3,173 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
$2,758 AUD