actinolite/tremolite, calsite, pyrite, talc, feldspar, picotite.
In natural beryl the clusters of
cracks, hollow tubes, two or three-phase inclusions.
Two phase inclusions have liquid with a
gas bubble in it. Three phase inclusions have also a crystal inclusion
in the liquid.
are growth lines and color zoning.
The parallel growth lines creating a
"Venetian blind" effect are common in synthetic emeralds. But also you can see them in
natural emeralds like the one above.
Some characteristic inclusions which
tell us the origin of the stone:
phase inclusions,growth zoning which is parallel to optic axis or follow
the crystal shape, mineral- crystal inclusions; pyrite, parisite,
Rusia: Actinolite needles are
the most common.
two phase inclusions
oriented two phase inclusions
These oriented two phase inlusions are
special to Zambia and India.