Technically hallmarks are applied to precious metals items by indep.
What does a white gold hallmark look like.
Over time the rhodium coating becomes worn revealing the yellow gold colour underneath.
A hallmark is an official mark or series of marks struck on items made of metal mostly to certify the content of noble metals such as platinum gold silver and in some nations palladium in a more general sense the term hallmark can also be used to refer to any distinguishing characteristic.
Gold traders has compiled a gold hallmark identification wizard to help decipher the markings that are stamped on your item.
I know of no specific hallmark that differentiates gold alloys that appear more like silver platinum or palladium than the alloys that have the typical yellow color of gold.
It s a legal requirement for silver over 7 78g gold and palladium over 1g and platinum over 0 5g to have a uk recognised hallmark.
Have a look at your piece of jewellery.
The uk hallmarking act 1973 states that it is an offence for any person in the course of trade or business to describe an un hallmarked article as being wholly or partly made of precious metal s or to.
White gold coated in rhodium image credit wikimedia commons.
If it was made in a country that adheres to the convention on the control and marking of articles of precious metals otherwise known as the common control mark you should find a set of hallmarks stamps.
Look for markings like pt or pt followed by a number to indicate platinum metal.
The assay office marks for gold would be in a square shield with chamfered corners and in a blunt oval for silver.
Look for other hallmarks or stamps that indicate plated gold such as hge gold filled plate rgp ep or 1 10 the fractions indicate the ratio of gold to alloy such as copper.