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Cushion|Natural|GIA

1.00ct J SI2 Cushion Natural Diamond

EX • J/SI2 • GIA 1508655786

Certificate GIA 1508655786

Diamond specifications and retailer prices

From $1,662 AUD
As of November 6, 2026
Save $667 AUD (29%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,318 AUD at MOH London · As of October 29, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1508655786. Listed at 11 retailers as of November 6, 2026, with a 40% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1508655786
Dimensions5.53 × 5.38 × 4.03 mm
L/W Ratio1.03
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
5.53 mm5.38 mm1.00 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1508655786
Side View
Table 59.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 75.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,318 AUD|Low: $1,524 AUD|High: $3,780 AUD|Avg: $2,173 AUD|-12.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6$1,662 AUD
Retailer 7$1,726 AUD
Retailer 2$1,795 AUD
Retailer 5$1,802 AUD
Retailer 10$1,825 AUD
Retailer 8$1,997 AUD
Retailer 4$2,036 AUD
Retailer 9$2,196 AUD
Retailer 3$2,329 AUD
MOH London$3,318 AUD

42 data points across 10 retailers

11 retailers$1,662 AUD to $2,329 AUD

A
Cheapest Retailer
-
$1,662 AUD
Final sale: no returns
A
Retailer 2
-
$1,726 AUD
View
A
Retailer 3
-
$1,795 AUD
View
Retailer 4
-
$1,802 AUD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$1,825 AUD
View
B+
Retailer 6
-
$1,997 AUD
View
B+
Retailer 7
-
$2,036 AUD
View
B+
Retailer 8
-
$2,196 AUD
View
B+
Retailer 9
-
$2,240 AUD
View
B+
Retailer 10
-
$2,329 AUD
View
Most Expensive
MOH London
C03E2AA9D · Oct 29
$3,318 AUD
£1,795 GBP
View
Price last confirmed 8 days ago
10 more retailers have this diamond
Prices start from $1,662 AUDSave up to $667 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.

A
1.00ct Cushion
$1,662 AUD