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Cushion|Natural|GIA

1.00ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 1226075838

Certificate GIA 1226075838

Diamond specifications and retailer prices

From $3,622 AUD
As of November 4, 2026
Save $4,255 AUD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,878 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 1226075838. Listed at 19 retailers as of November 4, 2026, with prices from $3,622 to $7,878, a $4,255 spread on the same certified stone. MOH London lists it at $7,878. 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 1226075838
Dimensions5.93 × 5.72 × 3.84 mm
L/W Ratio1.04
Culet sizeNone
Top View
5.93 mm5.72 mm1.00 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1226075838
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $7,878 AUD|Low: $3,701 AUD|High: $7,994 AUD|Avg: $4,825 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$3,701 AUD
Retailer 5$3,726 AUD
Retailer 9$4,018 AUD
Retailer 6$4,279 AUD
Retailer 7$4,619 AUD
Retailer 4$4,857 AUD
Retailer 3$5,183 AUD
Retailer 2$5,574 AUD
MOH London$7,878 AUD

43 data points across 9 retailers

19 retailers$3,622 AUD to $7,878 AUD

B+
Cheapest Retailer
-
$3,622 AUD
B
Retailer 2
-
$3,701 AUD
View
B+
Retailer 3
-
$3,726 AUD
View
B
Retailer 4
-
$3,784 AUD
View
B
Retailer 5
-
$3,831 AUD
View
B+
Retailer 6
-
$3,953 AUD
View
B
Retailer 7
-
$4,018 AUD
View
Retailer 8
-
$4,279 AUD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$4,369 AUD
View
B
Retailer 10
-
$4,619 AUD
View
B
Retailer 11
-
$4,646 AUD
View
B
Retailer 12
-
$4,857 AUD
View
B
Retailer 13
-
$4,876 AUD
View
B
Retailer 14
-
$4,876 AUD
View
B
Retailer 15
-
$5,036 AUD
View
B
Retailer 16
-
$5,183 AUD
View
Retailer 17
-
$5,480 AUD
View
Price last confirmed 15 days ago
Retailer 18
-
$5,574 AUD
View
Most Expensive
B
MOH London
8A63291A6 · Nov 4
$7,878 AUD
£4,262 GBP
View
18 more retailers have this diamond
Prices start from $3,622 AUDSave up to $4,255 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.

B+
1.00ct Cushion
$3,622 AUD