Related Clues:

• It may be volcanic
• Substance in some lamps
• Popular hand soap
• It comes before Wednesday once a year
• Fire proof?
• Corona's end
• Shade of blonde
• Stuff of bats
• It comes from the hearth
• Molten rock
• Volcanic output
• Contents of a BBQ pit, often
• '70s lamp
• Pale gray
• Hot rock