ayopaltehuilotl.

Headword: 
ayopaltehuilotl.
Principal English Translation: 

amethyst, quartz, precious stone (see Molina)

Orthographic Variants: 
ayopalteuilotl
Alonso de Molina: 

ayopalteuilotl. amatista, piedra preciosa.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 3v. col. 2. Thanks to Joe Campbell for providing the transcription.

See also: