For example the combination of gold with different kinds of bluish or purple colored gemstones looks very interesting and beautiful, since the two colors create a contrast.
Even though most vintage rings are silvery looking made of white gold,platinum and diamonds or other clear gemstones, there are some which are more colorful. Since the vintage era was so long the style and fashion changed many times, and this is visible also in the way jewelry looked.
Tanzanite vintage rings are rare but they are beautiful. The bluish, purplish stone called the Tanzanite comes from Tanzania and therefore it is associated with the colorful exotic countries. These stones are very beautiful because it happens very often that the same gemstone has different shades of blue. If such a stone is embedded into platinum or gold, it looks truly beautiful, and it can be admired for hours.
Tanzanite rings are often combined with diamonds. They are usually made of white gold or gold, creating a nice contrast with the purple color. The diamonds are great to make the ring sparkle and shine more, even look mystical. The vintage bands of the tanzanite rings are often decorated with filagree and floral patterns, especially the ones made in the Edwardian or Victorian ages.
If you want to find an exotic looking vintage ring you should either go for emerald rings on gold band or Tanzanite rings on gold or white gold. Online auctions are a great place to start looking, since this is the only way you can find something affordable.
In antique stores and retro shops rings can be very expensive, sometimes several thousand dollars. There are some collectors who put the rings they own to auctions and if you ever have to chance to participate, do so. You have nothing to lose and if you win you will be the owner of something truly special and beautiful. You can find the best deals on Ebay.