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Cushion|Natural|GIA

1.21ct J SI1 Cushion Natural Diamond

GD • J/SI1 • GIA 6565516311

Certificate GIA 6565516311

Diamond specifications and retailer prices

From $5,427 AUD
£2,995 GBP
As of October 27, 2026
Save $1,327 AUD (20%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $9,287 AUD at MOH London · As of October 25, 2026
View at MOH London

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6565516311. Listed at 9 retailers as of October 27, 2026, with a relatively tight 24% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565516311
Dimensions9.04 × 5.87 × 2.52 mm
L/W Ratio1.54
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Pinpoint
Top View
9.04 mm5.87 mm1.21 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565516311
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 42.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $9,287 AUD|Low: $4,692 AUD|High: $9,387 AUD|Avg: $6,082 AUD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 27, 2026
Retailer 7$4,997 AUD
Retailer 6$5,118 AUD
Retailer 9$5,301 AUD
Retailer 2$5,427 AUD
Retailer 5$5,546 AUD
Retailer 8$5,755 AUD
Retailer 10$5,941 AUD
Retailer 3$6,243 AUD
Retailer 4$6,754 AUD
MOH London$9,287 AUD

20 data points across 10 retailers

9 retailers$5,427 AUD to $6,754 AUD

Retailer 1
-
$4,997 AUD
$3,502 USD
Price last confirmed 7 days ago
Retailer 2
-
$5,301 AUD
$3,715 USD
View
Price last confirmed 5 days ago
B
Retailer 3
-
$5,427 AUD
£2,995 GBP
View
Retailer 4
-
$5,546 AUD
$3,887 USD
View
Price last confirmed 8 days ago
Retailer 5
-
$5,755 AUD
$4,034 USD
View
Price last confirmed 8 days ago
Retailer 6
-
$5,941 AUD
View
Price last confirmed 25 days ago
C
Retailer 7
-
$6,243 AUD
€4,167 EUR
View
C
Retailer 8
-
$6,754 AUD
ZAR 76,464 ZAR
View
Most Expensive
MOH London
5C5BD7DDD · Oct 25
$9,287 AUD
£5,125 GBP
View
Price last confirmed 8 days ago
8 more retailers have this diamond
Prices start from $5,427 AUDSave up to $1,327 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
1.21ct Cushion
$5,427 AUD