Carminite is a mineral that is known for its bright red color. Though there aren't too many synonyms for carminite, there are other words that can describe the similar, rich hue. One word that comes to mind is "crimson" which also pertains to a deep red shade. Another word that can be used to describe the same color is "vermilion", which is a pigment made from mercuric sulfide and usually has a brighter, orange tone than carminite. The term "magenta" can also be used to refer to a similar rich red, although it is sometimes associated with pink or purple tones as well. Lastly, the word "ruby" can also be used, especially when referring to the gemstone which is also a deep red shade.