Sentence:  These following bodies do not draw: smaragd, achates, corneolus, pearl, jaspis, chalcedonius, alabaster, porphyry, coral, marble, touchstone, haematites, or <WSD>bloodstone</WSD> ... 
Meaning of the word marked with <WSD> tags:  A green chalcedony that has been sprinkled with red spots (which resemble blood, hence the name).