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Cushion|Natural|GIA

1.00ct I SI1 Cushion Natural Diamond

GD • I/SI1 • GIA 6375936754

Certificate GIA 6375936754

Diamond specifications and retailer prices

From $2,973 AUD
As of November 6, 2026
Save $1,629 AUD (35%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,602 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6375936754. Listed at 17 retailers as of November 6, 2026, with prices from $2,973 to $4,602, a $1,629 spread on the same certified stone. Washington Diamond lists it at $4,602. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6375936754
Dimensions5.57 × 5.30 × 3.85 mm
L/W Ratio1.05
Top View
5.57 mm5.30 mm1.00 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6375936754
Side View
Table 64.0%CrownGirdle: - SPavilionCulet: NoneDepth 72.7%

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: $4,323 AUD|Low: $2,888 AUD|High: $4,602 AUD|Avg: $3,408 AUD|+2.9%
Retailer 1
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
Washington Diamond
November 6, 2026
Retailer 14$2,888 AUD
Retailer 10$2,973 AUD
Retailer 8$2,997 AUD
Retailer 7$3,010 AUD
Retailer 13$3,141 AUD
Retailer 9$3,148 AUD
Retailer 15$3,231 AUD
Retailer 4$3,289 AUD
Retailer 12$3,462 AUD
Retailer 11$3,602 AUD
Retailer 6$3,633 AUD
Retailer 2$3,653 AUD
Retailer 3$3,653 AUD
Retailer 5$3,660 AUD
Retailer 16$3,784 AUD
Retailer 1$4,323 AUD
Washington Diamond$4,602 AUD

23 data points across 17 retailers

17 retailers$2,973 AUD to $4,602 AUD

B+
Cheapest Retailer
-
$2,973 AUD
B+
Retailer 2
-
$2,997 AUD
View
B+
Retailer 3
-
$3,010 AUD
View
B+
Retailer 4
-
$3,112 AUD
View
B+
Retailer 5
-
$3,141 AUD
View
B+
Retailer 6
-
$3,148 AUD
View
B
Retailer 7
-
$3,231 AUD
View
B
Retailer 8
-
$3,289 AUD
View
B
Retailer 9
-
$3,462 AUD
View
B
Retailer 10
-
$3,602 AUD
View
B
Retailer 11
-
$3,633 AUD
View
B
Retailer 12
-
$3,653 AUD
View
B
Retailer 13
-
$3,653 AUD
View
B
Retailer 14
-
$3,660 AUD
View
B
Retailer 15
-
$3,784 AUD
View
B
Retailer 16
-
$4,323 AUD
View
Most Expensive
Washington Diamond
1917992653 · Nov 6
$4,602 AUD
$3,162 USD
View
16 more retailers have this diamond
Prices start from $2,973 AUDSave up to $1,629 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
$2,973 AUD