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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 £1,865 GBP
As of November 6, 2026
Save £2,266 GBP (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,621 GBP 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: £4,621 GBP|Low: £1,855 GBP|High: £4,720 GBP|Avg: £2,808 GBP|+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£1,865 GBP
Retailer 2£1,940 GBP
Retailer 3£2,259 GBP
Retailer 8£2,285 GBP
Retailer 4£2,286 GBP
Retailer 13£2,477 GBP
Retailer 9£2,563 GBP
Retailer 12£2,584 GBP
Retailer 7£2,596 GBP
Retailer 5£2,645 GBP
Retailer 6£2,883 GBP
Retailer 10£4,131 GBP
Queensmith£4,621 GBP

28 data points across 13 retailers

15 retailers£1,865 GBP to £4,131 GBP

A
Cheapest Retailer
-
£1,865 GBP
A
Retailer 2
-
£1,940 GBP
View
B+
Retailer 3
-
£2,259 GBP
View
B+
Retailer 4
-
£2,285 GBP
View
B+
Retailer 5
-
£2,286 GBP
View
Final sale: no returns
B+
Retailer 6
-
£2,405 GBP
View
Retailer 7
-
£2,477 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£2,563 GBP
View
B+
Retailer 9
-
£2,572 GBP
View
B+
Retailer 10
-
£2,584 GBP
View
B+
Retailer 11
-
£2,596 GBP
View
B+
Retailer 12
-
£2,645 GBP
View
B+
Retailer 13
-
£2,883 GBP
View
B
Retailer 14
-
£4,131 GBP
View
Most Expensive
Queensmith
5553478498 · Oct 28
£4,621 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from £1,865 GBPSave up to £2,266 GBP

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
£1,865 GBP