Anandakanda 2.3.9

2.3.9

kaṭhinaṃ kṛtrimaṃ rūkṣaṃ vivarṇaṃ samalaṃ dalam /
dāhe chede ghane naṣṭaṃ madhyamaṃ rajataṃ matam //

Hard, artificial, dry, discolored, full of dross, laminar, / [and] lost in burning, cutting, or hammering—such silver is considered mediocre.