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Cushion|Natural|GIA

1.20ct E SI2 Cushion Natural Diamond

EX • E/SI2 • GIA 5553478498

Certificate GIA 5553478498

Diamond specifications and retailer prices

From $3,633 AUD
As of November 6, 2026
Save $4,414 AUD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,002 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded E 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 5553478498. Listed at 15 retailers as of November 4, 2026, with a 122% 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

1.20
Carat
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553478498
Dimensions7.37 × 5.51 × 3.67 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Knot, Feather, Crystal, Cloud, Needle, Indented Natural, Natural
Top View
7.37 mm5.51 mm1.20 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5553478498
Side View
Table 67.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 66.5%

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 6
Current: $9,002 AUD|Low: $3,614 AUD|High: $9,196 AUD|Avg: $5,471 AUD|+0.1%
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 6, 2026
Retailer 11$3,633 AUD
Retailer 2$3,780 AUD
Retailer 3$4,400 AUD
Retailer 8$4,452 AUD
Retailer 4$4,454 AUD
Retailer 13$4,826 AUD
Retailer 9$4,992 AUD
Retailer 12$5,034 AUD
Retailer 7$5,058 AUD
Retailer 5$5,152 AUD
Retailer 6$5,616 AUD
Retailer 10$8,047 AUD
Queensmith$9,002 AUD

28 data points across 13 retailers

15 retailers$3,633 AUD to $8,047 AUD

A
Cheapest Retailer
-
$3,633 AUD
A
Retailer 2
-
$3,780 AUD
View
B+
Retailer 3
-
$4,400 AUD
View
B+
Retailer 4
-
$4,452 AUD
View
B+
Retailer 5
-
$4,454 AUD
View
Final sale: no returns
B+
Retailer 6
-
$4,685 AUD
View
Retailer 7
-
$4,826 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$4,992 AUD
View
B+
Retailer 9
-
$5,011 AUD
View
B+
Retailer 10
-
$5,034 AUD
View
B+
Retailer 11
-
$5,058 AUD
View
B+
Retailer 12
-
$5,152 AUD
View
B+
Retailer 13
-
$5,616 AUD
View
B
Retailer 14
-
$8,047 AUD
View
Most Expensive
Queensmith
5553478498 · Oct 28
$9,002 AUD
£4,870 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from $3,633 AUDSave up to $4,414 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
1.20ct Cushion
$3,633 AUD