Here's a link on how to work with the dichroic from Devardi:
DICHROIC along with a few more videos on working the glass. As long as you don't place the dichroic directly in the flame, it should work. Work it like you would when scrolling stringer on your bead. With practice, you'll be able to find the "sweet spot" where the dichroic will melt, but not burn. Encase and STILL work it rather "cool" and the sparkle will glisten!
Here's the link to all of their
"How To" videos
Jack