gemstones, an inclusion is any solid, liquid, or gaseous foreign
body enclosed in the mineral or rock. The price of amber
can vary greatly based on the type of inclusions and clarity of
the stone. Amber
that contains complete bodies of prehistoric bugs or a well defined
fern or leaf can bring a high price, while small bubbles of gas/liquid
add only interest to the stone but do not increase the value significantly.
is another clear stone that when embedded with well defined needle
like rutile inclusions can demand a high value.