Here is the best way to fill your fire table with FireGlass to preserve your gas burner and keep the larger glass stones from chipping and breaking.
1. Clean your table. Clear out all the lava rock and vacuum and clean any debris.
2. Using 1/4 inch glass stones for the base, pour them into a cheese cloth or rag to filter out the snow or chaff so you do not clog the burner, then fill the fire table to just over the top of your gas burner. The smaller glass stones have less air pockets so the gas does not flame up near the burner and make it burn out prematurely. The gas will percolate up and ignite on top of the 1/4" glass, giving the flames the effect of floating.
3. Add larger, more colorful FireGlass stones (1/2" or 1") for the desired visual effect. I like to mix and match colors.
I used clear 1/4 inch glass stones underneath to top the gas burner, then I covered it with 1" stones of clear zircon and ruby red luster zircon. I like to use the clear 1/4" Fireglass for the base or filler glass as it reminds me of the ice used in fish markets to display the fish. Whatever is on top really pops. See photo:
FireGlass not only adds beauty but also protects your gas burner to keep it looking good and burning well for a long time to come.