Related Clues:

• Stone made of silicon and oxygen
• Tourmaline or amethyst
• Setting filler
• Emerald, for one
• Little masterwork
• Idaho, the -- State
• Sherlock's Blue Carbuncle, for one
• Someone or something special
• Ritzy rock
• Iridescent gemstone
• Geyserite
• Ruby or emerald
• Milky gemstone
• It goes in a setting
• Colorful gem