Prices of platinum, a white precious metal, have rallied over 30% this year, echoing robust gains in gold prices.

Since jewelry can appreciate in price, sometimes buying an expensive set of gems is worth ... diamond necklace intertwined by 18-karat rose gold branchlets. With 874 diamonds of many shapes ...

As rings get more expensive, sellers are also encouraging ... $1,000 an ounce since she started her own jewelry business last summer. In July, gold reached over $2,400 an ounce.

With gold prices at record highs, jewelry collectors are in meltdown ... family heirlooms and other expensive pieces containing the precious metal that can be melted for cash.

Platinum prices have rallied 30% to over $1,200 per ounce this year. The rise in platinum prices mirrors the recent rise in gold prices. China's interest in platinum jewelry and diversified demand ...