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Cushion|Natural|GIA

1.00ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 1437577148

Certificate GIA 1437577148

Diamond specifications and retailer prices

From $2,134 SGD
As of November 5, 2026
Save $2,544 SGD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,678 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded J 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 1437577148. Listed at 19 retailers as of November 4, 2026, with prices from $2,134 to $4,678, a $2,544 spread on the same certified stone. MOH London lists it at $4,678. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1437577148
Dimensions6.29 × 5.26 × 3.55 mm
L/W Ratio1.20
Culet sizeNone
Key to symbols
Feather, Crystal, Knot, Cavity, Indented Natural, Needle, Natural
Top View
6.29 mm5.26 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1437577148
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 67.6%

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 5
Current: $4,678 SGD|Low: $2,072 SGD|High: $4,715 SGD|Avg: $2,925 SGD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$2,142 SGD
Retailer 7$2,239 SGD
Retailer 9$2,262 SGD
Retailer 6$2,425 SGD
Retailer 2$2,597 SGD
Retailer 4$3,267 SGD
Retailer 8$3,300 SGD
Retailer 3$3,636 SGD
MOH London$4,678 SGD

38 data points across 9 retailers

19 retailers$2,134 SGD to $4,678 SGD

B+
Cheapest Retailer
-
$2,134 SGD
B+
Retailer 2
-
$2,142 SGD
View
B+
Retailer 3
-
$2,211 SGD
View
B+
Retailer 4
-
$2,239 SGD
View
Final sale: no returns
Retailer 5
-
$2,262 SGD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
$2,268 SGD
View
B+
Retailer 7
-
$2,268 SGD
View
B+
Retailer 8
-
$2,340 SGD
View
B+
Retailer 9
-
$2,345 SGD
View
Retailer 10
-
$2,425 SGD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$2,486 SGD
View
B
Retailer 12
-
$2,508 SGD
View
B+
Retailer 13
-
$2,597 SGD
View
B
Retailer 14
-
$2,862 SGD
View
B
Retailer 15
-
$2,934 SGD
View
B
Retailer 16
-
$3,267 SGD
View
Retailer 17
-
$3,300 SGD
View
Price last confirmed 33 days ago
B
Retailer 18
-
$3,636 SGD
View
Most Expensive
B
MOH London
C3CD0076E · Nov 4
$4,678 SGD
£2,874 GBP
View
18 more retailers have this diamond
Prices start from $2,134 SGDSave up to $2,544 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
$2,134 SGD