There are many types of vintage rings available in online shops, retro stores and antique shops.
There are also many vintage rings that weren't actually made in the vintage era, but they were inspired by the style of the retro times. These are easier to find and also cheaper than the rest.
Vintage spider rings are more rare than other types of rings. If you want to find a ring that was made in the retro times and that is an authentic vintage ring, you won't have an easy job. As you probably already know in the retro times people didn't wear so many unusual jewelry, they preferred the classical cuts and the most regular types of rings.
Rings usually had a gemstone in the middle which was round and they were decorated or engraved. Vintage spider rings dating from the early years of the vintage time are almost impossible to find.
You might be able to find some rings made in the later decades closer to the modern times of today. They can also look very different compared to each other. While some of the rings feature actual spiders others are only inspired by the shape of the spider.
There are also some vintage cocktail spider rings which are very rare and hard to find. Most spider rings are made of white gold or sterling silver platinum, and often the body of the spider is made of semi precious or precious stones. Some of the vintage spider rings are decorated with many small diamonds.
The vintage spider rings that were only inspired by the vintage style are even more varied. The material they are made of and the way they are decorated can be completely different according to the designer. Remember that spider rings belong to people who like the gothic style and also are comfortable with spiders, so if you plant to give such a ring as a present, think it through. You can find the best deals on Ebay.