黑煤玉 Traditional form: 黑煤玉 Pinyin (reading): hēiméiyù Definitions: jet Characters: 黑 - black; dark; evil, sinister 煤 - carbon, charcoal, coal, coke 玉 - jade, gem, precious stone Traditional characters: 黑 - black; dark; evil, sinister 煤 - carbon, charcoal, coal, coke 玉 - jade, gem, precious stone