四分律行事鈔資持記 3.117

3.117

百一中，初科，初通示名體。若下，別簡。似寶不得自畜。除行須之具，即得畜用；如水精偽珠銅鐵等物，如〈隨相〉三十中具明。

Under 'One Hundred and One', in the first section, it first explains the name and substance generally. Under 'If...', it distinguishes specifically. Semiprecious items may not be possessed personally. Except for implements necessary for religious practice, one may possess and use them, such as crystal, imitation pearls, copper, iron, and the like, as fully explained under the thirty [niḥsargika-pāyattikas] in the 'Concomitant Marks'.