He collaborated with the National University of Singapore and Singapore Polytechnic and found out that the piece was green feldspar, not jade.
2.
The papyrus stem, or Wadj amulet was made from'green feldspar'as prescribed in Chapter 160, Charpter 159 from the Book of the Dead.
3.
The papyrus stem, M13 or Wadj amulet was made from'green feldspar'as prescribed in Chapter 160, Charpter 159 from the Book of the Dead.
4.
The name is taken from that of the Amazon River, from which certain green stones were formerly obtained, but it is doubtful whether green feldspar occurs in the Amazon area.