Let's Try It: Scrying
Your humble Guide attempts scrying - staring into a crystal ball - to see what visions might appear. And I got some interesting results!
The author offers his version of procedures for scrying with crystals (and other things): the tools you need and how to use them.
Shadows and Light Scrying Items
If you don't already have your tools for scrying, check out this page, which offers black mirrors and crystals.
A Short Course in Scrying
Author Benjamin Rowe provides a rather thorough lesson in scrying, from setting the atmosphere to invoking spirits.
The Wonderful World of Scrying
Also called crystallomancy, scrying is a technique used by seers, psychics, and sorcerers, using crystals and gemstones in the divination of one's past, present and future.