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Cushion|Natural|GIA

1.20ct E SI2 Cushion Natural Diamond

EX • E/SI2 • GIA 1548580644

Certificate GIA 1548580644

Diamond specifications and retailer prices

From $3,315 AUD
As of November 6, 2026
Save $3,949 AUD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,623 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 1548580644. Listed at 15 retailers as of November 4, 2026, with a 119% 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 1548580644
Dimensions7.75 × 5.45 × 3.45 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cavity, Needle, Cloud
Top View
7.75 mm5.45 mm1.20 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1548580644
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.3%

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: $8,623 AUD|Low: $3,278 AUD|High: $8,780 AUD|Avg: $4,947 AUD|+1.3%
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 6, 2026
Retailer 12$3,315 AUD
Retailer 2$3,452 AUD
Retailer 11$4,007 AUD
Retailer 3$4,018 AUD
Retailer 9$4,031 AUD
Retailer 6$4,282 AUD
Retailer 13$4,561 AUD
Retailer 5$4,609 AUD
Retailer 8$4,609 AUD
Retailer 4$4,705 AUD
Retailer 7$5,069 AUD
Retailer 10$7,264 AUD
Queensmith$8,623 AUD

25 data points across 13 retailers

15 retailers$3,315 AUD to $7,264 AUD

A
Cheapest Retailer
-
$3,315 AUD
A
Retailer 2
-
$3,452 AUD
View
B+
Retailer 3
-
$4,007 AUD
View
A
Retailer 4
-
$4,018 AUD
View
Final sale: no returns
B+
Retailer 5
-
$4,031 AUD
View
B+
Retailer 6
-
$4,242 AUD
View
B+
Retailer 7
-
$4,282 AUD
View
Retailer 8
-
$4,519 AUD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$4,561 AUD
View
B+
Retailer 10
-
$4,609 AUD
View
B+
Retailer 11
-
$4,609 AUD
View
B+
Retailer 12
-
$4,705 AUD
View
B+
Retailer 13
-
$5,069 AUD
View
B
Retailer 14
-
$7,264 AUD
View
Most Expensive
Queensmith
1548580644 · Oct 28
$8,623 AUD
£4,665 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from $3,315 AUDSave up to $3,949 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
$3,315 AUD