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Cushion|Natural|GIA

1.00ct G SI1 Cushion Natural Diamond

GD • G/SI1 • GIA 1379930764

Certificate GIA 1379930764

Diamond specifications and retailer prices

From $3,540 AUD
As of November 4, 2026
Save $1,936 AUD (35%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,475 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 G 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 1379930764. Listed at 17 retailers as of November 4, 2026, with prices from $3,540 to $5,475, a $1,936 spread on the same certified stone. Washington Diamond lists it at $5,475. 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
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1379930764
Dimensions6.06 × 5.18 × 3.71 mm
L/W Ratio1.17
Key to symbols
Cloud, Feather, Crystal, Indented Natural
Top View
6.06 mm5.18 mm1.00 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1379930764
Side View
Table 68.0%CrownGirdle: - VPavilionCulet: NoneDepth 71.7%

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 4
Current: $5,090 AUD|Low: $3,465 AUD|High: $5,475 AUD|Avg: $4,112 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 10$3,500 AUD
Retailer 14$3,540 AUD
Retailer 15$3,639 AUD
Retailer 11$3,652 AUD
Retailer 8$3,698 AUD
Retailer 7$3,783 AUD
Retailer 9$3,953 AUD
Retailer 16$4,024 AUD
Retailer 3$4,031 AUD
Retailer 4$4,292 AUD
Retailer 13$4,308 AUD
Retailer 12$4,435 AUD
Retailer 6$4,541 AUD
Retailer 5$4,563 AUD
Retailer 2$4,686 AUD
Retailer 1$5,090 AUD
Washington Diamond$5,475 AUD

25 data points across 17 retailers

17 retailers$3,540 AUD to $5,475 AUD

Retailer 1
-
$3,500 AUD
Price last confirmed 17 days ago
B+
Retailer 2
-
$3,540 AUD
View
B+
Retailer 3
-
$3,652 AUD
View
B
Retailer 4
-
$3,698 AUD
View
B
Retailer 5
-
$3,783 AUD
View
B
Retailer 6
-
$3,953 AUD
View
B
Retailer 7
-
$4,024 AUD
View
B
Retailer 8
-
$4,031 AUD
View
B
Retailer 9
-
$4,292 AUD
View
B
Retailer 10
-
$4,308 AUD
View
B
Retailer 11
-
$4,435 AUD
View
B
Retailer 12
-
$4,541 AUD
View
B
Retailer 13
-
$4,541 AUD
View
B
Retailer 14
-
$4,563 AUD
View
B
Retailer 15
-
$4,686 AUD
View
B
Retailer 16
-
$5,090 AUD
View
Most Expensive
Washington Diamond
1917992628 · Nov 6
$5,475 AUD
$3,762 USD
View
16 more retailers have this diamond
Prices start from $3,540 AUDSave up to $1,936 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
$3,540 AUD