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Cushion|Natural|GIA

1.00ct I SI2 Cushion Natural Diamond

GD • I/SI2 • GIA 1559983627

Certificate GIA 1559983627

Diamond specifications and retailer prices

From $1,301 AUD
As of November 2, 2026
Save $1,878 AUD (59%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,179 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1559983627. Listed at 13 retailers as of November 2, 2026, with prices from $1,301 to $3,179, a $1,878 spread on the same certified stone. MOH London lists it at $3,179. 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
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1559983627
Dimensions6.58 × 5.08 × 3.55 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.58 mm5.08 mm1.00 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1559983627
Side View
Table 59.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 69.9%

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 2
Current: $3,179 AUD|Low: $1,301 AUD|High: $3,212 AUD|Avg: $1,886 AUD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 4, 2026
Retailer 8$1,301 AUD
Retailer 10$1,471 AUD
Retailer 4$1,601 AUD
Retailer 9$1,674 AUD
Retailer 11$1,687 AUD
Retailer 5$1,713 AUD
Retailer 3$1,792 AUD
Retailer 7$1,886 AUD
Retailer 12$1,898 AUD
Retailer 2$1,959 AUD
Retailer 6$2,417 AUD
MOH London$3,179 AUD

23 data points across 12 retailers

13 retailers$1,301 AUD to $3,179 AUD

A
Cheapest Retailer
-
$1,301 AUD
B+
Retailer 2
-
$1,471 AUD
View
B+
Retailer 3
-
$1,674 AUD
View
B+
Retailer 4
-
$1,687 AUD
View
B+
Retailer 5
-
$1,713 AUD
View
Retailer 6
-
$1,735 AUD
View
Price last confirmed 30 days ago
B+
Retailer 7
-
$1,792 AUD
View
B+
Retailer 8
-
$1,886 AUD
View
B+
Retailer 9
-
$1,898 AUD
View
B+
Retailer 10
-
$1,918 AUD
View
B+
Retailer 11
-
$1,959 AUD
View
B+
Retailer 12
-
$2,417 AUD
View
Most Expensive
B
MOH London
49A69BAE9 · Nov 2
$3,179 AUD
£1,720 GBP
View
12 more retailers have this diamond
Prices start from $1,301 AUDSave up to $1,878 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
$1,301 AUD