Arion was born as Evelina Grüntal in Breslau, Germany (now Wrocław, Poland).
Aged 22, she initially settled in Haifa, studying with the ceramicist Hedwig Grossman and the sculptor Rudi Lehman.
Arion was married to the journalist and art lover Moshe Dagan (1909-1973) until his death.
In 1960, she participated in specialist training in industrial work with enamel at the Gustavsberg factory in Sweden.
In 1970, the Israeli Ministry of Education chose Arion as a guest artist at the Cité internationale des arts in Paris, where she studied calligraphy and Korean sumi painting with the Korean artist Ung Nu Li.