Related Clues:

• Cameo quartz
• Autumn gem
• Jet-black
• White-and-black layered quartz
• Birthstone for many Libras
• Like some earrings
• Common name for hydrous silica
• Gemstone from Down Under
• Kind of quartz
• Precious stone
• Scorpio stone
• October birthstone
• Hydrophane, e.g.
• October's jewel
• Australian gemstone