Note 3126 — BOOK XXXVII. THE NATURAL HISTORY OF PRECIOUS STONES.
John Bostock translation
This may possibly have been Plasma, a faintly translucent Chalcedony, approaching jasper, having a greenish colour, sprinkled with yellow and whitish dots, and a glistening lustre. Or, perhaps, Bloodstone or Heliotrope, a kind of jasper.