pistikos (Greek #4101)
trustworthy, i.e. genuine (unadulterated)
KJV usage: spike-(nard).
Pronounce: pis-tik-os'
poluteles (Greek #4185)
extremely expensive
KJV usage: costly, very precious, of great price.
Pronounce: pol-oo-tel-ace'
Origin: from 4183 and 5056