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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 $3,003 NZD
As of November 5, 2026
Save $3,581 NZD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,584 NZD 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 $3,003 to $6,584, a $3,581 spread on the same certified stone. MOH London lists it at $6,584. 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: $6,584 NZD|Low: $2,917 NZD|High: $6,637 NZD|Avg: $4,117 NZD|-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$3,014 NZD
Retailer 7$3,151 NZD
Retailer 9$3,184 NZD
Retailer 6$3,413 NZD
Retailer 2$3,655 NZD
Retailer 4$4,598 NZD
Retailer 8$4,645 NZD
Retailer 3$5,118 NZD
MOH London$6,584 NZD

38 data points across 9 retailers

19 retailers$3,003 NZD to $6,584 NZD

B+
Cheapest Retailer
-
$3,003 NZD
B+
Retailer 2
-
$3,014 NZD
View
B+
Retailer 3
-
$3,112 NZD
View
B+
Retailer 4
-
$3,151 NZD
View
Final sale: no returns
Retailer 5
-
$3,184 NZD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
$3,193 NZD
View
B+
Retailer 7
-
$3,193 NZD
View
B+
Retailer 8
-
$3,294 NZD
View
B+
Retailer 9
-
$3,301 NZD
View
Retailer 10
-
$3,413 NZD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$3,500 NZD
View
B
Retailer 12
-
$3,530 NZD
View
B+
Retailer 13
-
$3,655 NZD
View
B
Retailer 14
-
$4,028 NZD
View
B
Retailer 15
-
$4,129 NZD
View
B
Retailer 16
-
$4,598 NZD
View
Retailer 17
-
$4,645 NZD
View
Price last confirmed 33 days ago
B
Retailer 18
-
$5,118 NZD
View
Most Expensive
B
MOH London
C3CD0076E · Nov 4
$6,584 NZD
£2,874 GBP
View
18 more retailers have this diamond
Prices start from $3,003 NZDSave up to $3,581 NZD

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
$3,003 NZD