What is the difference of Platinum and White Gold

PLATINUM VS WHITE GOLD PRICE

PLATINUM VS WHITE GOLD PRICE
Although platinum and white gold look similar to the naked eye, there are some differences between them.
The primary difference between white gold and platinum is their price, platinum jewellery being more expensive.
Though these two metals are quite similar in price per gram, more platinum is required to make a jewellery piece because it is denser. Platinum is about 60% heavier than 14k gold and 40% heavier than 18k gold, meaning jewellery made in platinum will be heavier than an identical piece made in white gold. This results in a higher price.
Another reason for a higher price is the platinum rarity as this metal occurs in only a few locations in the world. Moreover, platinum used in jewellery has a higher purity level than gold. While white gold is almost always under 75% (18k) pure, platinum should be at least 80% pure to be considered platinum.
PLATINUM VS WHITE GOLD COLOUR

PLATINUM VS WHITE GOLD COLOUR

Although white gold and platinum are almost identical in colour, there is some difference in appearance, especially when time passes.
While platinum is a naturally occurring white metal, white gold is an alloy consisting of yellow gold and other metals and rhodium plating to achieve the silvery-white colour.
It is important to understand that the rhodium plating wears off with time exposing the original yellow gold colour. This is why to keep white gold shiny and white, you will need to have its rhodium plating restored from time to time.
Platinum, on the other hand, does not change its colour or fade but it tends to scratch and develop a patina that makes it look dull and matte. In case you want to restore the lustre of your platinum ring, you need to have it repolished.