Chalcedony to as prase. However, the term prase is also used to describe green quartz, and to a certain extent is a color-descriptor, rather than a rigorously defined mineral variety.) Blue-colored chalcedony is sometimes referred to as "blue chrysoprase" if the color is sufficiently rich, though it derives its color from the presence of copper and is largely unrelated to nickel-bearing chrysoprase. Heliotrope is a green variety of chalcedony, containing red inclusions of iron oxide that resemble drops of blood, giving heliotrope its alternative name of bloodstone. In a similar variety, the spots are yellow instead, known as plasma. Moss agate
A Red, Red Rose The lyrics are included in the song "Final Breath" by the post rock band Pelican on their album "What We All Come to Need". Moscow-based art-rock band "Red Red Rose" derives its name from the poem and has a song called "RRR" inspired by the poem. When asked for the source of his greatest creative inspiration, American singer songwriter Bob Dylan selected Burns' 1794 song "A Red, Red Rose", as the lyrics that have had the biggest effect on his life. The song is highly evocative, including lines describing rocks melting with the sun, and the seas running dry. Burns