“Ocean of Diamonds” was written by Cliff Carnahan, a Louisiana-based bluegrass fiddle player and songwriter, and first recorded by Jimmy Martin on February 19, 1958. The recording was released in April 1958 paired with “Sophronie” on the same single. The song is one of the most enduring titles from Martin’s productive late-1950s Decca period.
The lyric’s central image — the singer’s love measured as an ocean of diamonds, valued more than any other treasure — sits in the country-bluegrass declaration-of-fidelity tradition that runs through much of the genre’s catalog. Martin’s high-lonesome lead vocal on the original recording established the canonical reading, and the Sunny Mountain Boys’ tight arrangement set the standard that subsequent bluegrass acts have referenced.
The song’s most influential modern reading is from the Bluegrass Album Band, whose 1980s recordings of the song with Tony Rice on lead vocals introduced it to a younger acoustic-music audience. Willie Nelson’s cover crossed the song into the country-pop register, and Roland White, Bill Keith, and Jim Rooney have also cut influential versions. “Ocean of Diamonds” remains a regular at jam sessions where pickers want a Jimmy Martin-tradition piece with strong melodic line and clear emotional arc.
