Related Clues:

• Rock around a star
• Sodium, for one
• Ozzy's genre
• Silver or platinum
• Krypton or Ork
• Krypton, in science fiction
• Iron or tin
• Zinc or zirconium
• Kent's newspaper
• Solar system spheroid
• Almost any element whose name ends in -ium
• Good conductor?
• Detector activator
• Like most golf woods, nowadays
• Heavy rock?