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Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6542540034

Certificate GIA 6542540034

Diamond specifications and retailer prices

From $4,180 AUD
As of November 6, 2026
Save $4,437 AUD (51%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,617 AUD at MOH London · As of November 2, 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 I 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 6542540034. Listed at 19 retailers as of November 2, 2026, with prices from $4,180 to $8,617, a $4,437 spread on the same certified stone. MOH London lists it at $8,617. 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

1.21
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542540034
Dimensions7.29 × 5.37 × 3.69 mm
L/W Ratio1.36
Cert comments
Additional pinpoints are not shown.
Key to symbols
Crystal, Feather, Pinpoint
Top View
7.29 mm5.37 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542540034
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.7%

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 6
Current: $8,617 AUD|Low: $3,949 AUD|High: $8,721 AUD|Avg: $5,363 AUD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 12$4,180 AUD
Retailer 10$4,307 AUD
Retailer 11$4,369 AUD
Retailer 3$4,384 AUD
Retailer 9$4,667 AUD
Retailer 5$4,998 AUD
Retailer 8$5,293 AUD
Retailer 2$5,331 AUD
Retailer 4$5,517 AUD
Retailer 6$5,998 AUD
Retailer 7$6,287 AUD
MOH London$8,617 AUD

38 data points across 12 retailers

19 retailers$4,180 AUD to $8,617 AUD

Retailer 1
-
$4,087 AUD
Price last confirmed 31 days ago
B+
Retailer 2
-
$4,180 AUD
View
B+
Retailer 3
-
$4,307 AUD
View
Final sale: no returns
B+
Retailer 4
-
$4,369 AUD
View
B+
Retailer 5
-
$4,384 AUD
View
Retailer 6
-
$4,667 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$4,998 AUD
View
B
Retailer 8
-
$5,018 AUD
View
B
Retailer 9
-
$5,293 AUD
View
Retailer 10
-
$5,293 AUD
View
Price last confirmed 19 days ago
B
Retailer 11
-
$5,298 AUD
View
B
Retailer 12
-
$5,298 AUD
View
B
Retailer 13
-
$5,331 AUD
View
B
Retailer 14
-
$5,472 AUD
View
Retailer 15
-
$5,517 AUD
View
Price last confirmed 30 days ago
Retailer 16
-
$5,838 AUD
View
Price last confirmed 15 days ago
B
Retailer 17
-
$5,998 AUD
View
B
Retailer 18
-
$6,287 AUD
View
Most Expensive
B
MOH London
AB3735B3F · Nov 2
$8,617 AUD
£4,662 GBP
View
18 more retailers have this diamond
Prices start from $4,180 AUDSave up to $4,437 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
$4,180 AUD