Prehnite

History
Prehnite was officially named in 1788 after a Dutch colonel named Hendrik von (or van) Prehn. Prehn–a naturalist and mineral collector–was given credit for discovering the stone in 1774, at the Cape of Good Hope in modern South Africa.This stone has been given a number of other names over the years, including adelite, chiltonite, chrysolite of sage, coupholite, Karoo stone, grape jade and more.

Metaphysical Properties
Prehnite is considered a “stone of dreaming”; it is believed to increase the power of the dream state, strengthen lucid dreaming and promote communication with other planes of existence. It is also considered a “stone of prophecy,” with long use by indigenous peoples of South Africa.
Although not a birthstone, prehnite is affiliated with the zodiac sign Libra. It is often associated with the third eye chakra.