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 Tribe Called Red of John Trudell, a Native American activist, poet and musician. In fact, with this work the ATCR wanted to celebrate contemporary Indigenous culture. A Tribe Called Red A Tribe Called Red (often abbreviated as ATCR) is a Canadian electronic music group, who blend instrumental hip hop, reggae, moombahton and dubstep-influenced dance music with elements of First Nations music, particularly vocal chanting and drumming. Based in Ottawa, Ontario, the group consists of Tim "2oolman" Hill (Mohawk, of the Six Nations of the Grand River), and Ehren "Bear Witness" Thomas (of the Cayuga First Nation). Former members include co-founder DJ Jon Deck