Hallmarks of GIYOU silver and gold flowers

Hallmark control system in the Czech Republic

The hallmark control system is mandatory in the Czech Republic. In addition, the Czech Republic is a signatory to The Convention on the Control and Marking of Articles of Precious Metals, Vienna, 1972. Weight exceptions are in the Czech Republic for gold up to 0.5g, silver 3g. The hallmarks of the Czech Republic are recognized in the EU practically in all European countries, either on the basis of the Czech Republic's membership in the EU or because the hallmarking system of the Czech Republic is generally perceived as sufficiently independent and guaranteeing consumer protection. 

You will find official hallmarks of the Czech Republic here.

Hallmarks of GIYOU silver and gold products

All GIYOU silver or gold flowers are hallmarked with a production hallmark and a hallmark of fineness and if they are above the legal limit (gold 0.5 g, silver 3 g) they are additionally hallmarked by the Assay Office of the Czech Republic.

Our silver and gold products can also be hallmarked with CCM - marking according to The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972). If a foreign buyer requires, even beyond the legal obligation, to mark the flowers with CCM hallmark, please contact customer service (tel: +420-775-555-531, email: info@giyou.cz), we will provide the CCM hallmark for you.

Fineness of our silver and gold products

We sell flowers with the following fineness of gold and silver:

  • Gold 585/1000 (14 karat), 585 pure gold parts and 415 parts of other metals
  • Gold 750/1000 (18 karat), 750 pure gold parts and 250 parts of other metals (bespoke production)
  • Gold 999/1000 (24 karat), contains no additives of other metals (bespoke production)(possibility to order is subject to agreement)
  • Silver 925/1000, 925 pure silver parts and 75 parts of other metals

Information about hallmarking of selected countries

In the overview you will find basic information on hallmarking of silver and gold jewelry of selected countries. **

Austria

Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
Control sytem - voluntary
Weight exemptions - gold 2g, silver 30g (there are no weight exemptions under the Convention’s rules)
Recognition of hallmarks - CCM and all marks from EEA

Croatia
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mandatory
  • Weight exemptions - golod 3g, silver 3g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM and all from EU, EEA and EFTA countries
Cyprus
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mandatory
  • Weight exemptions - gold 1g, silver 3g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM and all marks from EU on condition of equal system or equal standards 
Denmark
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mandatory registration and voluntary control marking
  • Weight exemptions- gold 1g, silver 3g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM and marks from EU
France
  • No signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • obligation to hallmark, but also possibility to hallmark only by producers
Finland
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - voluntary
  • Weight exemptions - gold 1g, silver 10g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM and foreign marks that are in accordance with national requirements 
Germany
  • No signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - voluntary
Great Britain
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mandatory
  • Weight exemptions- gold 1g, silver 7,78 g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM

  • After Brexit, obligations to recognise equivalent EU hallmarks ended

Hungary
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mandatory
  • Weight exemptions - gold 1g, silver 2g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM a marks from the Czech Republic, Poland, Slovakia, Cyprus and the Netherlands 
Ireland
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mandatory
  • Weight exemptions - none
  • Recognition of hallmarks - CCM and marks from EU with equal system of control and hallmarking 
Israel
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mixed (only related to gold)
  • Weight exemptions - gold 2g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM
Italy
  • Applicant state of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972) (no signatory yet)
  • Control sytem - voluntary
  • Weight exemptions - gold 1g, silver 1g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM, marks of EU, EEA and Switzerland
Japan
  • No signatory of the Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - voluntary
Netherlands
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mandatory
  • Weight exemptions- gold 1g, silver 8g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM and Belgium, Cyprus, Czechia, Denmark, Estonia, Finland, France,  Hungary, Ireland, Croatia,  Latvia, Lithuania, Malta, Poland, Portugal, Slovenia, Slovakia, Spain, Sweden, and United Kingdom
New Zeeland
  • No signatory of the Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - voluntary
Poland
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mandatory
  • Weight exemptions - gold 1g, silver 5g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM and marks from all EU countries 
Portugal
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mandatory
  • Weight exemptions- gold 0,5g, silver 2g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM and marks from EU/EEA a other countries on basis of concluded agreements 
Singapore
  • No signatory of the Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - voluntary
Slovakia
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mandatory
  • Weight exemptions - gold 0,5g, silver 2g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM and marks from EU with equal system of control and hallmarking 
Slovenia
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mandatory
  • Weight exemptions - golod 1g, silver 7g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM and all from EFTA countries providing equal level of protection of public interests according to law of Slovenia 
Sweden
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - mixed
  • Weight exemptions - gold 1g, silver 3g (there are no weight exemptions under the Convention’s rules)
  • Recognition of hallmarks - CCM and EEA
Switzerland
  • Signatory of The Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - voluntary (for jewellery)
  • Weight exemptions - --
  • Recognition of hallmarks - CCM, Italy, France
United States of America
  • No signatory of the Convention on the Control and Marking of Articles of Precious Metals (Vienna, 1972)
  • Control sytem - voluntary

** The information provided in the overview above serves purely for an information and does not have any official or legal status. To ascertain that data and information are correct and and up-to-date, please contact the authorised authorities. We may update and supplement the overiview from time to time.