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Cushion|Natural|GIA

3.50ct E SI2 Cushion Natural Diamond

EX • E/SI2 • GIA 6555403099

Certificate GIA 6555403099

Diamond specifications and retailer prices

From HK$317,371 HKD
As of October 30, 2026
Save HK$43,610 HKD (12%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$553,681 HKD at MOH London · As of October 21, 2026
View at MOH London

About this 3.5ct natural cushion diamond

This 3.5ct natural cushion sits in the three to five 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 6555403099. Listed at 14 retailers as of October 29, 2026, with a relatively tight 14% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

3.50
Carat
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.13°
Pavilion angle53.14°
OriginNatural
Grading LabGIA
CertificateGIA 6555403099
Dimensions10.88 × 7.78 × 5.42 mm
L/W Ratio1.40
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
10.88 mm7.78 mm3.50 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555403099
Side View
Table 67.0%Crown 32.13°Girdle: STK-THKPavilion 53.14°Culet: NoneDepth 69.7%

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$553,681 HKD|Low: HK$315,292 HKD|High: HK$593,770 HKD|Avg: HK$388,953 HKD|-5.8%
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
Retailer 14
October 30, 2026
Retailer 12HK$317,371 HKD
Retailer 14HK$319,576 HKD
Retailer 7HK$319,874 HKD
Retailer 2HK$335,374 HKD
Retailer 9HK$335,904 HKD
Retailer 10HK$346,254 HKD
Retailer 4HK$360,981 HKD
Retailer 8HK$363,572 HKD
Retailer 13HK$377,159 HKD
Retailer 6HK$403,266 HKD
Retailer 5HK$420,018 HKD
Retailer 11HK$424,706 HKD
Retailer 3HK$427,271 HKD
MOH LondonHK$553,681 HKD

39 data points across 14 retailers

14 retailersHK$317,371 HKD to HK$360,981 HKD

A
Cheapest Retailer
-
HK$317,371 HKD
Retailer 2
-
HK$319,576 HKD
$40,729 USD
View
Price last confirmed 10 days ago
A
Retailer 3
-
HK$319,874 HKD
$40,767 USD
View
A
Retailer 4
-
HK$335,374 HKD
₹4,070,705 INR
View
Retailer 5
-
HK$335,904 HKD
$42,810 USD
View
Price last confirmed 9 days ago
A
Retailer 6
-
HK$346,254 HKD
$44,129 USD
View
A
Retailer 7
-
HK$352,102 HKD
A$69,038 AUD
View
A
Retailer 8
-
HK$360,981 HKD
$46,006 USD
View
Final sale: no returns
Retailer 9
-
HK$363,572 HKD
£36,485 GBP
View
Price last confirmed 8 days ago
Retailer 10
-
HK$377,159 HKD
$48,068 USD
View
Price last confirmed 12 days ago
Retailer 11
-
HK$403,266 HKD
$51,395 USD
View
Price last confirmed 10 days ago
Retailer 12
-
HK$420,018 HKD
$53,530 USD
View
Price last confirmed 11 days ago
Retailer 13
-
HK$427,271 HKD
$54,454 USD
View
Price last confirmed 8 days ago
Most Expensive
MOH London
6E75E7458 · Oct 21
HK$553,681 HKD
£55,563 GBP
View
Price last confirmed 9 days ago
13 more retailers have this diamond
Prices start from HK$317,371 HKDSave up to HK$43,610 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
3.50ct Cushion
HK$317,371 HKD