sb. pl. Obs. [mod.L., a. Gr. τελέσια, pl. neuter of τελέσι-ος finishing, completing, perfecting. In Fr. télésie (Haüy, 1790).] A name for the precious stones composed of crystallized alumina, as the sapphire and its class.
1812. Sir H. Davy, Chem. Philos., 357. Alumina … in its crystallized form coloured by small quantities of iron,… constitutes a beautiful class of gems, distinguished by the name Telesia, including the ruby, the sapphire, the oriental topaz.
1819. Pantologia, Telesia,… a name given by Hauy to the sapphire.
