Related Clues:

• Ring thing
• Jewel
• Rock
• Sparkler
• Opal or onyx
• Ruby, e.g.
• Ring feature
• Diamond or ruby
• Set piece?
• Uncut ruby, e.g.
• Emerald or ruby
• Opal or topaz
• It's multifaceted
• Piece of crystalline rock as jewellery
• Physical power