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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 HK$478,101 HKD
$60,938 USD
As of October 30, 2026
Save HK$123,928 HKD (21%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$602,029 HKD at 77 Diamonds · As of October 30, 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 30, 2026, with prices from HK$478,101 to HK$602,029, a HK$123,928 spread on the same certified stone. 77 Diamonds lists it at HK$602,029. 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 30
Current: HK$602,029 HKD|Low: HK$478,101 HKD|High: HK$975,847 HKD|Avg: HK$785,379 HKD|-29.8%
77 Diamonds
Retailer 2
Retailer 3
October 30, 2026
Retailer 2HK$478,101 HKD
Retailer 3HK$507,923 HKD
77 DiamondsHK$602,029 HKD

20 data points across 3 retailers

3 retailersHK$478,101 HKD to HK$602,029 HKD

A
Cheapest Retailer
-
HK$478,101 HKD
$60,938 USD
A
Retailer 2
-
HK$507,923 HKD
$64,739 USD
View
Most Expensive
A
77 Diamonds
CUSZ7DGDXRJB · Oct 30
HK$602,029 HKD
£60,420 GBP
View
2 more retailers have this diamond
Prices start from HK$478,101 HKDSave up to HK$123,928 HKD

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
HK$478,101 HKD