Related Clues:

• Sings with abandon about European 16
• Rock that's coarse-grained, it's a pleasure to report
• Rock making pleasant sound
• Coarse-grained metamorphic rock
• Mineral used in auto paint
• Utterance of prophet? It's usually transparent
• Flagstone material
• It's noted for its cleavage
• Small well in rock
• Hardly hard rock?
• Mineral whose name is Latin for "crumb"
• Rock hotel in auction
• Easily split layered rock
• Material in holy book not hard ultimately
• It makes granite glint