Platinum is a pure white precious metal which will not need rhodium plating required by white gold settings. It is very mailable, therefore stones set in platinum are much less likely to become loose. White gold has metal memory, so the prongs can loosen over time. It is important to have these checked and tightened. White gold also needs rhodium plating to achieve a platinum white look. Platinum is denser, therefore 60% heavier than 14kt white gold. It is also more expensive to manufacture, however, will last several lifetimes.
