Note 3100 — BOOK XXXVII. THE NATURAL HISTORY OF PRECIOUS STONES.

From λυχνὸς, a “lighted lamp” or “torch.” Brotero is of opinion that this is the Cherry-coloured ruby, that the Ionian stone is the Purple ruby, and that the kermes-berry coloured stone is the Scarlet or Spinelle ruby. From the distinct reference made to its electric nature, Ajasson identifies it with Tourmaline, a Silicate of alumina. Beckmann is of the same opinion; Hist. Inv. Vol. I. p. 88. Bohn’s Edition.