Many different stones, crystals, metals and gems can be used, depending on what specifically you want to do. Below are just a few.
Agriculture - Bloodstone, Coral,
Awaken spirit - Amber
Energy - Beryl, Brass, Calcite, Garnet,
Energy, to increase psychic - Moss Agate,
Environmental healing - Aquamarine
Fertility - Emerald, Geodes, Jade, Jasper -green,
Gardens - Bloodstone,
Gardening - Agate, Bloodstone, Jade, Jet, Malachite, Moonstone,
Gardening, talisman - Moss Agate, Coral, Moonstone,
Insect bites, to guard against - Red (or Blood) Agate.
Dancing with Nature Spirits was created in 1996.
The great spirits were kind and felt they should be one with nature. They liked nature. They were peaceful spirits, much like Buddha and believed one must find peace within oneself.
There is no specific reason for it, it is just an occurrence of nature.
Shinto sprits are called Kami which means soul or spirit in Japanese!
Nymphs.
kami
There are really crystals. That is the nature.
I think it is nature
It is hard to answer, because usually all religions are based on spirits.
spirits in nature
because nothing in nature is flawless, crystals either grow from minerals or form under lots of pressure and heat
Well, Conglomerate is a sedimentary rock and sedimentary rocks are not crystalline in nature, but they do consist of mineral crystals such as Quartz.