pristine
pri-ˈstēn,
especially British ˈpri-ˌstīn
Adjective
1
: belonging to the earliest period or state : ORIGINAL
the hypothetical pristine lunar atmosphere
2
a
: not spoiled, corrupted, or polluted (as by civilization) : PURE
a pristine forest
b
: fresh and clean as or as if new
used books in pristine condition
Source