Anandakanda 2.8.6

2.8.6

<nīlagandhika>
māṇikyaṃ padmarāgākhyaṃ dvitīyaṃ nīlagandhi ca /
<ruby:: parīkṣā:: good quality>
kuśeśayadalacchāyaṃ svacchaṃ snigdhaṃ guru sphuṭam //

Ruby is called padmarāga, and the second is nīlagandhi.
Having the hue of a lotus petal, clear, glossy, heavy, distinct,