Some games require a shockwave plugin. The initial set up takes some time, but once you start playing response time is generally good. Includes links to rock collecting clubs, a rockhound listserv, and a swap list. Includes Frequently Asked Questions about gemstones and links to other gemology information. Gives in-depth information about a variety of gems, their cutting and polishing, as well as care and pricing.
Collectors can purchase shells, or trade for shells with shells from their own collection.
Includes information on the society, philatelic education programs, and youth activities. The APS Dealer Mall has links to dealers, which are also searchable by location and specialty. This site from the United States Post Office is geared to philatelists, featuring the latest stamps and stamp collectibles. Links to an archive of stamp news releases and images. Also includes a listing of stamp collecting software, links to topical stamp collections by private collectors, and indexes by theme and country.