iztac teocuitlatl.

Headword: 
iztac teocuitlatl.
Principal English Translation: 

silver (see Molina); literally, white gold or white precious metal; white divine excrement/excrescence

Alonso de Molina: 

iztac teocuitlatl. plata.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 49r. col. 2. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

75 pesos de "yztac teocuitlatl" = translated as "plata de oro común"
(Toluca, 1722)
Stephanie Wood collection, notes from Nahuatl documents in the file "Bills of Sale," citing Archivo General del Estado de México, RPEM 6, exp. 10, ff. 4r.–5v.

themes: 
Jewelry, Adornment, Accouterments
Metals, Mining