Purity Pure gold is too soft for everyday use. It needs to be combined with a careful mixture of metals like silver, copper, and zinc to give it body and durability. Karatage, denoted by a number followed by "k", indicates purity; in other words, the percentage of gold in the total metal mass of a piece of jewellery. Karatage is expressed in 24ths, making 24k gold, 100% gold.
Bizzotto jewellery is created exclusively with 18k gold – an alloy with a 75% gold rate – in order to make precious yet durable pieces for everyday wear.
Bizzotto selects only very high-quality alloys that combine natural, non-allergenic metals in compliance with The European Union's (EU) Nickel Directive.
Colour The colour of gold is determined by two factors:
- the type of metal alloys included
- the percentage of each metal alloy
Yellow Gold
Natural gold and colour-saturated alloys are what give yellow gold jewellery its rich shine. The alloys most commonly used are red-hued copper and green-hued silver. An expert mixture of copper, silver and pure gold gives this precious metal its signature warmth.
White Gold A luxury platinum white finish is what makes white gold jewellery so appealing. In order to make it white, gold is combined with metal alloys that are white in nature and plated with rhodium. Despite its hardness, rhodium may wear away over time. Replating is a simple process that can be done to restore the white rhodium coating to your jewellery.