Many of the suppliers for the lampwork glass bead people carry the
dichroic glass in sheets and "sticks". You must get all the same type
of glass with the same co-efficiency of expansion in order to be able
to fuse colors together or fuse with other glass of the same type.
When ordering, ask if all the glass that you are purchasing is
compatible. This will preclude incompatibility so that you will not
have problems after you fire such as the glass of it coming apart or
exploding. Also, make sure that you ask at what temperature should
this glass be fired. If the wrong temperature is used, the dichroic
can burn off. You might also go to the library and make inquiry about
a book using dichroic glass. There are many books published on this
subject. Among some of those are FrantzArtGlass.com and also
glasscraft.com. Both are reliable companies (no affiliation etc.).
Unique Solutions, Inc.
Paste Solder and Powder Solder for Jewelers and Metalsmiths