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Cushion|Natural|GIA

1.20ct E SI1 Cushion Natural Diamond

ID • E/SI1 • GIA 5553311990

Certificate GIA 5553311990

Diamond specifications and retailer prices

From $2,812 AUD
As of November 6, 2026
Save $3,687 AUD (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,499 AUD at MOH London · As of November 7, 2026
View at MOH London

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded E 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 5553311990. Listed at 16 retailers as of November 6, 2026, with prices from $2,812 to $6,499, a $3,687 spread on the same certified stone. MOH London lists it at $6,499. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 5553311990
Dimensions7.10 × 5.45 × 3.71 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Cavity, Needle
Top View
7.10 mm5.45 mm1.20 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 5553311990
Side View
Table 66.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.0%

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: $6,499 AUD|Low: $2,775 AUD|High: $6,859 AUD|Avg: $4,005 AUD|-5.3%
MOH London
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 11$2,812 AUD
Retailer 6$2,950 AUD
Retailer 10$3,416 AUD
Retailer 13$3,442 AUD
Retailer 4$3,500 AUD
Retailer 12$3,588 AUD
Retailer 5$3,868 AUD
Retailer 8$3,899 AUD
Retailer 2$3,946 AUD
Retailer 3$4,061 AUD
Retailer 9$4,551 AUD
Retailer 7$4,630 AUD
MOH London$6,499 AUD

29 data points across 13 retailers

16 retailers$2,812 AUD to $6,499 AUD

A
Cheapest Retailer
-
$2,812 AUD
A
Retailer 2
-
$2,950 AUD
View
A
Retailer 3
-
$3,416 AUD
View
A
Retailer 4
-
$3,442 AUD
View
Final sale: no returns
A
Retailer 5
-
$3,500 AUD
View
A
Retailer 6
-
$3,588 AUD
View
A
Retailer 7
-
$3,627 AUD
View
Retailer 8
-
$3,868 AUD
View
Price last confirmed 22 days ago
A
Retailer 9
-
$3,899 AUD
View
B+
Retailer 10
-
$3,905 AUD
View
A
Retailer 11
-
$3,946 AUD
View
B+
Retailer 12
-
$4,061 AUD
View
Retailer 13
-
$4,363 AUD
View
Price last confirmed 31 days ago
B+
Retailer 14
-
$4,551 AUD
View
B+
Retailer 15
-
$4,630 AUD
View
Most Expensive
B
MOH London
D9C128CBD · Nov 7
$6,499 AUD
£3,516 GBP
View
15 more retailers have this diamond
Prices start from $2,812 AUDSave up to $3,687 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
$2,812 AUD