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Cushion|Natural|GIA

1.21ct E SI1 Cushion Natural Diamond

VG • E/SI1 • GIA 1545713657

Certificate GIA 1545713657

Diamond specifications and retailer prices

From $3,548 AUD
As of November 7, 2026
Save $3,877 AUD (52%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,733 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 E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1545713657. Listed at 18 retailers as of November 7, 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. 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
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545713657
Dimensions5.86 × 5.81 × 3.92 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
5.86 mm5.81 mm1.21 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1545713657
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.5%

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 7
Current: $8,733 AUD|Low: $3,548 AUD|High: $8,733 AUD|Avg: $5,221 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 7, 2026
Retailer 11$3,548 AUD
Retailer 5$4,063 AUD
Retailer 9$4,120 AUD
Retailer 10$4,194 AUD
Retailer 17$4,293 AUD
Retailer 14$4,359 AUD
Retailer 12$4,464 AUD
Retailer 16$4,625 AUD
Retailer 8$4,672 AUD
Retailer 2$4,691 AUD
Retailer 6$4,817 AUD
Retailer 7$5,023 AUD
Retailer 3$5,197 AUD
Retailer 4$5,449 AUD
Retailer 13$5,766 AUD
Retailer 15$7,425 AUD
Queensmith$8,733 AUD

22 data points across 17 retailers

18 retailers$3,548 AUD to $7,425 AUD

A
Cheapest Retailer
-
$3,548 AUD
B+
Retailer 2
-
$4,063 AUD
View
B+
Retailer 3
-
$4,120 AUD
View
Final sale: no returns
B+
Retailer 4
-
$4,122 AUD
View
B+
Retailer 5
-
$4,194 AUD
View
B+
Retailer 6
-
$4,293 AUD
View
B+
Retailer 7
-
$4,359 AUD
View
B+
Retailer 8
-
$4,464 AUD
View
B+
Retailer 9
-
$4,625 AUD
View
B+
Retailer 10
-
$4,672 AUD
View
B+
Retailer 11
-
$4,691 AUD
View
B+
Retailer 12
-
$4,817 AUD
View
B+
Retailer 13
-
$5,023 AUD
View
B+
Retailer 14
-
$5,197 AUD
View
B+
Retailer 15
-
$5,449 AUD
View
B
Retailer 16
-
$5,766 AUD
View
B
Retailer 17
-
$7,425 AUD
View
Most Expensive
Queensmith
1545713657 · Oct 28
$8,733 AUD
£4,725 GBP
View
Price last confirmed 10 days ago
17 more retailers have this diamond
Prices start from $3,548 AUDSave up to $3,877 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
$3,548 AUD