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Cushion|Natural|GIA

1.00ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6371885928

Certificate GIA 6371885928

Diamond specifications and retailer prices

From $3,724 AUD
As of November 4, 2026
Save $2,039 AUD (35%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,763 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6371885928. Listed at 19 retailers as of November 4, 2026, with prices from $3,724 to $5,763, a $2,039 spread on the same certified stone. Washington Diamond lists it at $5,763. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6371885928
Dimensions5.83 × 5.59 × 3.66 mm
L/W Ratio1.04
Top View
5.83 mm5.59 mm1.00 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6371885928
Side View
Table 65.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 65.4%

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: $4,755 AUD|Low: $3,724 AUD|High: $5,763 AUD|Avg: $4,435 AUD|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Washington Diamond
November 7, 2026
Retailer 7$3,724 AUD
Retailer 4$3,828 AUD
Retailer 3$4,161 AUD
Retailer 6$4,520 AUD
Retailer 5$4,662 AUD
Retailer 1$4,755 AUD
Retailer 2$5,359 AUD
Washington Diamond$5,763 AUD

44 data points across 8 retailers

19 retailers$3,724 AUD to $5,763 AUD

B+
Cheapest Retailer
-
$3,724 AUD
B+
Retailer 2
-
$3,828 AUD
View
B+
Retailer 3
-
$3,889 AUD
View
B+
Retailer 4
-
$3,981 AUD
View
B+
Retailer 5
-
$4,061 AUD
View
B+
Retailer 6
-
$4,161 AUD
View
B
Retailer 7
-
$4,197 AUD
View
B
Retailer 8
-
$4,221 AUD
View
B+
Retailer 9
-
$4,518 AUD
View
B+
Retailer 10
-
$4,520 AUD
View
B
Retailer 11
-
$4,662 AUD
View
B
Retailer 12
-
$4,755 AUD
View
B
Retailer 13
-
$4,759 AUD
View
B
Retailer 14
-
$4,759 AUD
View
B
Retailer 15
-
$4,803 AUD
View
B
Retailer 16
-
$4,919 AUD
View
B
Retailer 17
-
$5,359 AUD
View
B
Retailer 18
-
$5,391 AUD
View
Most Expensive
B
Washington Diamond
1917992618 · Nov 6
$5,763 AUD
$3,960 USD
View
18 more retailers have this diamond
Prices start from $3,724 AUDSave up to $2,039 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
$3,724 AUD