فأخبرني إنّه اشترى فصّين، وباعهما مالكهما على أنّهما بجاذيان، ولم يعرفهما، قال فعرفتهما أنا، وعلمت أنّهما بلخش، وهو جنس يشبه الياقوت الأحمر
He told me how he had once bought a couple of gems, sold to him by their owner as turquoise, but which he recognized as jacinth, a stone which resembles a red ruby