Why is a platinum ring more expensive than one in white gold?
Platinum is so rare that the price of the raw metal is invariably higher that gold. Platinum is denser than gold and weighs half as much again as 18 carat gold. Platinum jewellery is most often 95% pure compared to only 75% for 18 carat gold. (Gold is mixed with other metals as it is too soft in almost pure form) Platinum requires a higher level of craftsmanship and requires great skill to work it.
