The Jewel of Arwen is a Tolkien novelette by Marion Zimmer Bradley which describes the history of the white stone that Arwen gives to Frodo in Return of the King. The art is by Jean Brill. It is a reprint of the story from the zine, I Palantir (1961).
Marion Zimmer Bradley was an American fantasy and science fiction author. She was born 1930 and died 1999 after suffering a major heart attack.
Writing for over 4 decades, Marion Zimmer Bradley is best known for her Darkover science fantasy series and her Arthurian masterpiece, The Mists of Avalon. She also edited anthologies for several years and published Marion Zimmer Bradley's FANTASY Magazine.
Photo by Modern Arts Studio, Oakland, California. Source: Marion Zimmer Bradley Literary Works Trust.