15) I am building a propane fire pit. Can your product sit directly on the propane tubing or do I need to have the glass sit above the propane tubing. I was not sure if the glass would block the holes producing the flame? Also, Does the glass produce heat like lava rocks?

A propane application usually uses a pan type burner. The glass would sit right on top of the burner and pan.
Glass is a better conductor of heat than lava rocks so you will get more heat with the fire pit glass crystals.

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