Diamonds
have been mounted into gold jewelry in the richer countries of the
world for centuries, but an examination of the collections of old
jewelry in the great museums of the world will convince any one that
this ancient work is of interest and value only to the student of
antiques. These ornaments were invariably of gold. In work of a more
recent date, platinum, although used to a limited extent for about
thirty years, has been used to a marked degree only since about 1900.
In the evolution of present-day diamond jewelry, however, platinum has
been the metal which has increased steadily in favor, until it is now
practically the only metal used for the most elaborate and artistic
creations. Platinum was discovered in South America in 1735 and in
Russia in 1819. It has also been found in Canada and Australia. About
nine tenths of all produced in the world now comes from Russia. Very
little, however, is found, only about one per cent of platinum since
its discovery in proportion to gold found