Media used in scrying
A quartz crystal ball, commonly used for scrying.The most common media used for scrying are:
Crystal balls, crystals, precious stones, polished quartz, or another transparent body; this is called gastromancy (also crystallomancy or spheromancy). Sometimes "crystal gazing" refers specifically to spheromancy. Crystal balls are also called shew stones. A stone or crystal is also called a seerstone or peepstone.
Water or another liquid; this is called hydromancy.
Mirrors; this is called catoptromancy, also known as captromancy, enoptromancy, or mirror gazing.
Specific objects that have been used for scrying include:
a pool of ink in the hand (Egypt)
the liver of an animal (Etruscans, tribes of the North-West Indian frontier)
a hole filled with water (Polynesia)
quartz crystals (the Apaches and the Euahlayi tribe of New South Wales)
a smooth slab of polished black stone (the Huille-che of South America)
water in a vessel (Zulus and Siberians)
a crystal (the Incas)
a mirror (classical Greece and the Middle Ages)
a fingernail
a swordblade
a ring-stone
a glass of sherry
the burning of a poppy flowerbud on hot coals