Related Clues:

• Rolling holy ones for a group
• Hard, holy singles may be rolling
• They're very hard, holy singles, perhaps
• Ones that are holy but hard
• Are canonised ones the hard ones?
• Diamonds, e.g
• Pebbles and boulders
• Agate and amethyst, e.g
• Don't throw them at glass houses
• More than one rock group?
• Group of small rocks
• Cat's-eyes, e.g
• They make cameo appearances
• Masterworks
• Treasure chest glitterers