Platinum is a white metal, but unlike gold it is used in jewellery in almost its pure form (approximately 95% pure). Platinum is extremely long wearing and is very white, so it does not need to be rhodium plated like white gold does.
Platinum is very dense and heavy metal, so a platinum ring will feel heavier than an 22ct gold ring. Platinum is, however, significantly more expensive than gold. With all other things being the same, a platinum ring will be approximately twice the price of an 18ct white gold ring.
Platinum is a prestige choice and is often chosen for its sophisticated appeal and popularity amongst the rich and famous. Platinum is normally not used in the full range of jewellery products due to its higher price.
Platinum is mainly used in ladies engagement rings, ladies wedding rings and men's wedding rings. Platinum can also be used to make dress rings, though it is not commonly used to make earrings, pendants, bracelets or necklaces.