Including “Holy Grail” finds that could be worth thousands ...

This Pyrex pattern is eye-catchingly pretty, but it's also so rare that its origins are shrouded in mystery. If you thrift it, you'll be sitting on a goldmine.

Next time you're thrifting, see if you can snag a Pyrex with this vintage pattern. It's a very rare find that was only ...

Everyone loves a rare find, especially if it's vintage, but this 1960s Pyrex pattern might be extremely hard to locate at the ...

Add Yahoo as a preferred source to see more of our stories on Google. "Pyrex made hundreds of patterns, but some only for short periods of time. Those are the pieces that are the most valuable," she ...

Add Yahoo as a preferred source to see more of our stories on Google. A pyrex measuring cup on top of a vintage pyrex bowl - Noderog/Getty Images Pyrex is the vintage dishware brand you should always ...

Rare and limited-edition Pyrex items can be quite valuable, and this pretty pink casserole — especially with the matching ...

There was a time when no respectable casserole or Jell-O salad was served in anything but a brightly colored piece of Pyrex glassware — and every cupboard was stacked high with the functional mixing ...

Your next designer find could cost you less than your favorite coffee.

Some vintage Pyrex mixing bowl sets sell for more than $1,000. See the eight most valuable patterns and learn what collectors look for before you sell.