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Cushion|Natural|GIA

1.21ct F SI2 Cushion Natural Diamond

ID • F/SI2 • GIA 2557672350

Certificate GIA 2557672350

Diamond specifications and retailer prices

From $2,719 AUD
As of November 6, 2026
Save $3,589 AUD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,013 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557672350. Listed at 14 retailers as of November 4, 2026, with a 132% 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
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557672350
Dimensions7.08 × 5.45 × 3.75 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Cloud, Natural
Top View
7.08 mm5.45 mm1.21 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557672350
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.7%

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: $8,013 AUD|Low: $2,682 AUD|High: $8,124 AUD|Avg: $4,200 AUD|+1.6%
Queensmith
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 10$2,719 AUD
Retailer 5$2,844 AUD
Retailer 8$3,285 AUD
Retailer 3$3,333 AUD
Retailer 12$3,611 AUD
Retailer 7$3,772 AUD
Retailer 11$3,815 AUD
Retailer 2$3,820 AUD
Retailer 4$3,930 AUD
Retailer 6$4,481 AUD
Retailer 9$6,308 AUD
Queensmith$8,013 AUD

29 data points across 12 retailers

14 retailers$2,719 AUD to $6,308 AUD

A
Cheapest Retailer
-
$2,719 AUD
A
Retailer 2
-
$2,844 AUD
View
A
Retailer 3
-
$3,285 AUD
View
A
Retailer 4
-
$3,333 AUD
View
Final sale: no returns
A
Retailer 5
-
$3,489 AUD
View
Retailer 6
-
$3,611 AUD
View
Price last confirmed 9 days ago
A
Retailer 7
-
$3,772 AUD
View
B+
Retailer 8
-
$3,815 AUD
View
A
Retailer 9
-
$3,820 AUD
View
B+
Retailer 10
-
$3,905 AUD
View
B+
Retailer 11
-
$3,930 AUD
View
B+
Retailer 12
-
$4,481 AUD
View
B
Retailer 13
-
$6,308 AUD
View
Most Expensive
Queensmith
2557672350 · Oct 28
$8,013 AUD
£4,335 GBP
View
Price last confirmed 9 days ago
13 more retailers have this diamond
Prices start from $2,719 AUDSave up to $3,589 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
$2,719 AUD