Steve, is it known what the inclusions are, chemically? Thanks for >you other info.
I have heard many different things: lepidocrocite, goethite,
hematite. Most likely it is an iron mineral or even more specific -
a hydrated version of an iron oxide.
However, I am not absolutely certain what the inclusions are and
they very well may not all be the same mineral but a variety of
similar minerals. Ask the GIA or similar organization to be
certain.
Steve Green / Rough and Ready Gems, Inc. Briolettes briolettes
briolettes briolettes and more briolettes www.briolettes.com