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Cushion|Natural|GIA

1.00ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6372934021

Certificate GIA 6372934021

Diamond specifications and retailer prices

From $3,126 AUD
As of November 6, 2026
Save $1,741 AUD (36%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,867 AUD at Washington Diamond · As of November 6, 2026
View at Washington Diamond

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 6372934021. Listed at 18 retailers as of November 6, 2026, with prices from $3,126 to $4,867, a $1,741 spread on the same certified stone. Washington Diamond lists it at $4,867. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6372934021
Dimensions5.62 × 5.39 × 3.71 mm
L/W Ratio1.04
Top View
5.62 mm5.39 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6372934021
Side View
Table 64.0%CrownGirdle: MED-MEDPavilionCulet: NoneDepth 68.9%

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 6
Current: $4,573 AUD|Low: $3,039 AUD|High: $4,867 AUD|Avg: $3,586 AUD|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Washington Diamond
November 6, 2026
Retailer 8$3,039 AUD
Retailer 4$3,126 AUD
Retailer 7$3,323 AUD
Retailer 2$3,330 AUD
Retailer 6$3,662 AUD
Retailer 5$3,800 AUD
Retailer 3$3,847 AUD
Retailer 1$4,573 AUD
Washington Diamond$4,867 AUD

43 data points across 9 retailers

18 retailers$3,126 AUD to $4,867 AUD

B+
Cheapest Retailer
-
$3,126 AUD
B+
Retailer 2
-
$3,170 AUD
View
B+
Retailer 3
-
$3,184 AUD
View
B+
Retailer 4
-
$3,282 AUD
View
B+
Retailer 5
-
$3,323 AUD
View
B+
Retailer 6
-
$3,330 AUD
View
B+
Retailer 7
-
$3,388 AUD
View
B+
Retailer 8
-
$3,464 AUD
View
B
Retailer 9
-
$3,662 AUD
View
B
Retailer 10
-
$3,800 AUD
View
B+
Retailer 11
-
$3,842 AUD
View
B+
Retailer 12
-
$3,847 AUD
View
B
Retailer 13
-
$3,871 AUD
View
B
Retailer 14
-
$3,871 AUD
View
B
Retailer 15
-
$3,873 AUD
View
B
Retailer 16
-
$3,988 AUD
View
B
Retailer 17
-
$4,573 AUD
View
Most Expensive
Washington Diamond
1917992655 · Nov 6
$4,867 AUD
$3,344 USD
View
17 more retailers have this diamond
Prices start from $3,126 AUDSave up to $1,741 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
$3,126 AUD