AKA chrysoberyl, this gem produces a streak of light resembling the pupil of a certain animal when cut a certain way
...... Streak 
Streak refers to the colour of the powder produced when a mineral is rubbed over
... [DOC] [TLE] Full text of "The English cyclopdia : A dictionary of universal ... [PAR] In the form of the extremities the Orycteropus resembles the armadillos still ..... 
well-known for the valuable timber which is produced by many of the species.