Related Clues:

• Like some facts
• Bad, like luck
• Tough to figure out
• Strenuous
• ___ as a diamond
• Rock-like
• Kind of rock or candy
• Like a Saturday crossword
• Flinty
• Fatiguing
• 10 on the Mohs scale
• Like some ciders
• Like some water or lemonade
• Part 3 of today's quote
• No piece of cake