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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 $3,117 SGD
As of November 4, 2026
Save $1,705 SGD (35%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,821 SGD 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 $3,117 to $4,821, a $1,705 spread on the same certified stone. Washington Diamond lists it at $4,821. 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: $4,482 SGD|Low: $3,051 SGD|High: $4,821 SGD|Avg: $3,621 SGD|+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$3,082 SGD
Retailer 14$3,117 SGD
Retailer 15$3,204 SGD
Retailer 11$3,216 SGD
Retailer 8$3,257 SGD
Retailer 7$3,331 SGD
Retailer 9$3,481 SGD
Retailer 16$3,544 SGD
Retailer 3$3,550 SGD
Retailer 4$3,779 SGD
Retailer 13$3,794 SGD
Retailer 12$3,905 SGD
Retailer 6$3,999 SGD
Retailer 5$4,018 SGD
Retailer 2$4,127 SGD
Retailer 1$4,482 SGD
Washington Diamond$4,821 SGD

25 data points across 17 retailers

17 retailers$3,117 SGD to $4,821 SGD

Retailer 1
-
$3,082 SGD
Price last confirmed 17 days ago
B+
Retailer 2
-
$3,117 SGD
View
B+
Retailer 3
-
$3,216 SGD
View
B
Retailer 4
-
$3,257 SGD
View
B
Retailer 5
-
$3,331 SGD
View
B
Retailer 6
-
$3,481 SGD
View
B
Retailer 7
-
$3,544 SGD
View
B
Retailer 8
-
$3,550 SGD
View
B
Retailer 9
-
$3,779 SGD
View
B
Retailer 10
-
$3,794 SGD
View
B
Retailer 11
-
$3,905 SGD
View
B
Retailer 12
-
$3,999 SGD
View
B
Retailer 13
-
$3,999 SGD
View
B
Retailer 14
-
$4,018 SGD
View
B
Retailer 15
-
$4,127 SGD
View
B
Retailer 16
-
$4,482 SGD
View
Most Expensive
Washington Diamond
1917992628 · Nov 6
$4,821 SGD
$3,762 USD
View
16 more retailers have this diamond
Prices start from $3,117 SGDSave up to $1,705 SGD

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
$3,117 SGD