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Cushion|Natural|GIA

5.50ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 2221388113

Certificate GIA 2221388113

Diamond specifications and retailer prices

From £45,760 GBP
$60,938 USD
As of October 29, 2026
Save £11,686 GBP (20%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £57,446 GBP at 77 Diamonds · As of October 29, 2026
View at 77 Diamonds

About this 5.5ct natural cushion diamond

This 5.5ct natural cushion sits in the over five 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 2221388113. Listed at 3 retailers as of October 29, 2026, with prices from £45,760 to £57,446, a £11,686 spread on the same certified stone. 77 Diamonds lists it at £57,446. 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

5.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2221388113
Dimensions10.37 × 9.94 × 6.75 mm
L/W Ratio1.04
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural, Natural
Top View
10.37 mm9.94 mm5.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2221388113
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.9%

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: Oct 29
Current: £57,446 GBP|Low: £45,760 GBP|High: £93,401 GBP|Avg: £76,266 GBP|-30.0%
77 Diamonds
Retailer 2
Retailer 3
October 29, 2026
Retailer 2£45,760 GBP
Retailer 3£48,614 GBP
77 Diamonds£57,446 GBP

20 data points across 3 retailers

3 retailers£45,760 GBP to £57,446 GBP

A
Cheapest Retailer
-
£45,760 GBP
$60,938 USD
A
Retailer 2
-
£48,614 GBP
$64,739 USD
View
Most Expensive
A
77 Diamonds
CUSZ7DGDXRJB · Oct 29
£57,446 GBP
View
2 more retailers have this diamond
Prices start from £45,760 GBPSave up to £11,686 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
5.50ct Cushion
£45,760 GBP