CaratHunter
Plans
Cushion|Natural|GIA

1.00ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 1437577148

Certificate GIA 1437577148

Diamond specifications and retailer prices

From $2,423 AUD
As of November 5, 2026
Save $2,889 AUD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,312 AUD 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 $2,423 to $5,312, a $2,889 spread on the same certified stone. MOH London lists it at $5,312. 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: $5,312 AUD|Low: $2,353 AUD|High: $5,355 AUD|Avg: $3,321 AUD|-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$2,432 AUD
Retailer 7$2,543 AUD
Retailer 9$2,569 AUD
Retailer 6$2,754 AUD
Retailer 2$2,949 AUD
Retailer 4$3,710 AUD
Retailer 8$3,748 AUD
Retailer 3$4,129 AUD
MOH London$5,312 AUD

38 data points across 9 retailers

19 retailers$2,423 AUD to $5,312 AUD

B+
Cheapest Retailer
-
$2,423 AUD
B+
Retailer 2
-
$2,432 AUD
View
B+
Retailer 3
-
$2,511 AUD
View
B+
Retailer 4
-
$2,543 AUD
View
Final sale: no returns
Retailer 5
-
$2,569 AUD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
$2,576 AUD
View
B+
Retailer 7
-
$2,576 AUD
View
B+
Retailer 8
-
$2,658 AUD
View
B+
Retailer 9
-
$2,663 AUD
View
Retailer 10
-
$2,754 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$2,823 AUD
View
B
Retailer 12
-
$2,848 AUD
View
B+
Retailer 13
-
$2,949 AUD
View
B
Retailer 14
-
$3,250 AUD
View
B
Retailer 15
-
$3,331 AUD
View
B
Retailer 16
-
$3,710 AUD
View
Retailer 17
-
$3,748 AUD
View
Price last confirmed 33 days ago
B
Retailer 18
-
$4,129 AUD
View
Most Expensive
B
MOH London
C3CD0076E · Nov 4
$5,312 AUD
£2,874 GBP
View
18 more retailers have this diamond
Prices start from $2,423 AUDSave up to $2,889 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
$2,423 AUD