Bible Encyclopedias
Heliotrope

The Nuttall Encyclopedia

variety of quartz (chalcedony or jasper) of a deep green colour, with bright red spots. The finest specimens, which come from South Asia, are of fairly translucent chalcedony; those of jasper are opaque; they are used as seals, ring-stones, &c.

Bibliography Information
Wood, James, ed. Entry for 'Heliotrope'. The Nuttall Encyclopedia. https://www.studylight.org/​encyclopedias/​eng/​nut/​h/heliotrope.html. Frederick Warne & Co Ltd. London. 1900.