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Cushion|Natural|GIA

1.21ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6542610072

Certificate GIA 6542610072

Diamond specifications and retailer prices

From $3,464 AUD
As of November 6, 2026
Save $3,788 AUD (52%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,641 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542610072. Listed at 14 retailers as of November 6, 2026, with a 109% 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

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

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542610072
Dimensions6.07 × 5.66 × 3.84 mm
L/W Ratio1.07
Top View
6.07 mm5.66 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542610072
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.9%

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: $8,641 AUD|Low: $3,464 AUD|High: $8,669 AUD|Avg: $5,134 AUD|-0.3%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 9$3,464 AUD
Retailer 12$3,963 AUD
Retailer 4$4,024 AUD
Retailer 7$4,199 AUD
Retailer 2$4,257 AUD
Retailer 5$4,385 AUD
Retailer 3$4,567 AUD
Retailer 8$4,627 AUD
Retailer 13$4,711 AUD
Retailer 10$5,076 AUD
Retailer 11$5,321 AUD
Retailer 6$7,252 AUD
Queensmith$8,641 AUD

24 data points across 13 retailers

14 retailers$3,464 AUD to $7,252 AUD

A
Cheapest Retailer
-
$3,464 AUD
B+
Retailer 2
-
$3,963 AUD
View
B+
Retailer 3
-
$4,024 AUD
View
Final sale: no returns
B+
Retailer 4
-
$4,033 AUD
View
B+
Retailer 5
-
$4,199 AUD
View
B+
Retailer 6
-
$4,257 AUD
View
Retailer 7
-
$4,385 AUD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$4,567 AUD
View
B+
Retailer 9
-
$4,627 AUD
View
B+
Retailer 10
-
$4,711 AUD
View
B+
Retailer 11
-
$5,076 AUD
View
B+
Retailer 12
-
$5,321 AUD
View
B
Retailer 13
-
$7,252 AUD
View
Most Expensive
Queensmith
6542610072 · Oct 28
$8,641 AUD
£4,675 GBP
View
Price last confirmed 9 days ago
13 more retailers have this diamond
Prices start from $3,464 AUDSave up to $3,788 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
1.21ct Cushion
$3,464 AUD