The are more than one band under the name "Jade"
1) Jade were an English folk rock band founded in 1970 by Dave Waite & Marianne Segal who had been performing as a folk duo since the mid 1960s. In the United States the group was known as Marianne Segal and Silver Jade. Jade consisted of Segal (songwriter, vocals, guitar, percussion), Waite (guitar, banjo, bass and vocals) and Rod Edwards (keyboards, bass and vocals).
Their album Fly On Strangewings (DJLPS 407) was recorded in March 1970, at Trident Studios, Soho, London. Read more on Last.fm