Gold jewellery - jewellery made of gold exceeding 0.5 grams weight must be marked with the hallmark. This marking is implemented by authorized Assay Office for jewels meant to sale in the Czech Republic.
Table of hallmark symbols:
What is the hallmark?
Hallmark clarifies us, what is the purity of gold according to the standards, which the Assay Office gives. Constituent hallmarks are graphic symbols that are stamped into the jewellery. The customer simply determines the number of carats of gold. Indication the purity of gold – purity, or the number of carats, measures the proportion of gold in a total volume of alloy.
Marking degree 585/000 (14-carat gold) means that the total of 1000 parts of alloy is 585 parts gold.
585/000 - 14-carat yellow gold – 585 portions of pure gold + 415 portions other metals – mostly silver and copper.
585/000 - 14-carat white gold – 585 portions of white gold and 415 portions other metals – mostly silver and nickel or palladium.
750/000 - 18-carat gold – 750 portions of gold and 250 portions other metals
1000/000 - 24-carat gold – pure gold – contain any admixtures.
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