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Cushion|Natural|GIA

1.00ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 3545886515

Certificate GIA 3545886515

Diamond specifications and retailer prices

From $1,322 AUD
As of November 6, 2026
Save $1,808 AUD (58%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,129 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3545886515. Listed at 20 retailers as of November 4, 2026, with prices from $1,322 to $3,129, a $1,808 spread on the same certified stone. MOH London lists it at $3,129. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle38.5°
OriginNatural
Grading LabGIA
CertificateGIA 3545886515
Dimensions5.86 × 5.61 × 3.76 mm
L/W Ratio1.04
Top View
5.86 mm5.61 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3545886515
Side View
Table 63.0%CrownGirdle: THK-ETKPavilion 38.5°Culet: NoneDepth 67.0%

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: $3,129 AUD|Low: $1,322 AUD|High: $3,235 AUD|Avg: $1,965 AUD|-2.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 15$1,322 AUD
Retailer 7$1,562 AUD
Retailer 18$1,581 AUD
Retailer 10$1,630 AUD
Retailer 8$1,640 AUD
Retailer 17$1,739 AUD
Retailer 3$1,796 AUD
Retailer 11$1,829 AUD
Retailer 9$1,847 AUD
Retailer 16$1,899 AUD
Retailer 12$1,923 AUD
Retailer 14$2,013 AUD
Retailer 5$2,036 AUD
Retailer 13$2,090 AUD
Retailer 2$2,384 AUD
Retailer 6$2,396 AUD
Retailer 4$2,818 AUD
MOH London$3,129 AUD

23 data points across 18 retailers

20 retailers$1,322 AUD to $3,129 AUD

A
Cheapest Retailer
-
$1,322 AUD
Retailer 2
-
$1,562 AUD
View
Price last confirmed 9 days ago
A
Retailer 3
-
$1,581 AUD
View
Final sale: no returns
Retailer 4
-
$1,630 AUD
View
Price last confirmed 8 days ago
Retailer 5
-
$1,640 AUD
View
Price last confirmed 10 days ago
A
Retailer 6
-
$1,739 AUD
View
A
Retailer 7
-
$1,796 AUD
View
A
Retailer 8
-
$1,829 AUD
View
Retailer 9
-
$1,847 AUD
View
Price last confirmed 9 days ago
A
Retailer 10
-
$1,899 AUD
View
A
Retailer 11
-
$1,923 AUD
View
B+
Retailer 12
-
$2,013 AUD
View
Price last confirmed 3 days ago
A
Retailer 13
-
$2,036 AUD
View
A
Retailer 14
-
$2,090 AUD
View
A
Retailer 15
-
$2,268 AUD
View
Retailer 16
-
$2,378 AUD
View
Price last confirmed 34 days ago
A
Retailer 17
-
$2,384 AUD
View
Retailer 18
-
$2,396 AUD
View
Price last confirmed 8 days ago
B+
Retailer 19
-
$2,818 AUD
View
Most Expensive
B+
MOH London
12F93DD09 · Nov 4
$3,129 AUD
£1,693 GBP
View
19 more retailers have this diamond
Prices start from $1,322 AUDSave up to $1,808 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
$1,322 AUD