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Cushion|Natural|GIA

1.01ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 1558450738

Certificate GIA 1558450738

Diamond specifications and retailer prices

From $1,454 AUD
As of November 5, 2026
Save $1,500 AUD (51%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,954 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.01ct natural cushion diamond

This 1.01ct natural cushion sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558450738. Listed at 11 retailers as of November 4, 2026, with prices from $1,454 to $2,954, a $1,500 spread on the same certified stone. MOH London lists it at $2,954. 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

1.01
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1558450738
Dimensions6.72 × 5.57 × 3.84 mm
L/W Ratio1.21
Girdle conditionFaceted
Key to symbols
Feather, Natural
Top View
6.72 mm5.57 mm1.01 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558450738
Side View
Table 52.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,954 AUD|Low: $1,550 AUD|High: $2,994 AUD|Avg: $1,997 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$1,566 AUD
Retailer 6$1,615 AUD
Retailer 7$1,812 AUD
Retailer 4$1,822 AUD
Retailer 5$1,971 AUD
Retailer 3$2,249 AUD
MOH London$2,954 AUD

37 data points across 7 retailers

11 retailers$1,454 AUD to $2,954 AUD

A
Cheapest Retailer
-
$1,454 AUD
A
Retailer 2
-
$1,547 AUD
View
A
Retailer 3
-
$1,566 AUD
View
Retailer 4
-
$1,615 AUD
View
Price last confirmed 13 days ago
Retailer 5
-
$1,778 AUD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$1,809 AUD
View
B+
Retailer 7
-
$1,812 AUD
View
A
Retailer 8
-
$1,822 AUD
View
A
Retailer 9
-
$1,971 AUD
View
B+
Retailer 10
-
$2,249 AUD
View
Most Expensive
B+
MOH London
179E14EB5 · Nov 4
$2,954 AUD
£1,598 GBP
View
10 more retailers have this diamond
Prices start from $1,454 AUDSave up to $1,500 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
1.01ct Cushion
$1,454 AUD