Birthstones in the Yahoo! Directory

Amethyst Galleries: Birthstones
Descriptions and images of birthstones.
mineral.galleries.com/minerals/birthsto.htm
MIStupid.com: Birthstones
Birthstones and flowers associated with each month.
mistupid.com/months/birthstone.htm
Molecular Expressions: Birthstone Collection
Birthstones Collection is built around a series of digital images made from photomicrographs of mineral thin sections that contain the selected gems.
www.microscopy.fsu.edu/birthstones/index.html
Coyle Wholesale Jewelers: Birthstones
Lists all the birthstones for each month.
www.cwjewelers.com/anniversary.htm#birth