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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 $2,342 CAD
As of November 5, 2026
Save $2,792 CAD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,134 CAD 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 $2,342 to $5,134, a $2,792 spread on the same certified stone. MOH London lists it at $5,134. 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
Color
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: $5,134 CAD|Low: $2,274 CAD|High: $5,175 CAD|Avg: $3,210 CAD|-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$2,350 CAD
Retailer 7$2,457 CAD
Retailer 9$2,483 CAD
Retailer 6$2,661 CAD
Retailer 2$2,850 CAD
Retailer 4$3,585 CAD
Retailer 8$3,622 CAD
Retailer 3$3,991 CAD
MOH London$5,134 CAD

38 data points across 9 retailers

19 retailers$2,342 CAD to $5,134 CAD

B+
Cheapest Retailer
-
$2,342 CAD
B+
Retailer 2
-
$2,350 CAD
View
B+
Retailer 3
-
$2,426 CAD
View
B+
Retailer 4
-
$2,457 CAD
View
Final sale: no returns
Retailer 5
-
$2,483 CAD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$2,490 CAD
View
B+
Retailer 7
-
$2,490 CAD
View
B+
Retailer 8
-
$2,568 CAD
View
B+
Retailer 9
-
$2,574 CAD
View
Retailer 10
-
$2,661 CAD
View
Price last confirmed 8 days ago
B
Retailer 11
-
$2,729 CAD
View
B
Retailer 12
-
$2,753 CAD
View
B+
Retailer 13
-
$2,850 CAD
View
B
Retailer 14
-
$3,141 CAD
View
B
Retailer 15
-
$3,220 CAD
View
B
Retailer 16
-
$3,585 CAD
View
Retailer 17
-
$3,622 CAD
View
Price last confirmed 32 days ago
B
Retailer 18
-
$3,991 CAD
View
Most Expensive
B
MOH London
C3CD0076E · Nov 4
$5,134 CAD
£2,874 GBP
View
18 more retailers have this diamond
Prices start from $2,342 CADSave up to $2,792 CAD

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
$2,342 CAD