Related Clues:

• Sort of blue and quite sour after upheaval
• Without question, new route is a gem!
• Blue Tories question university after reshuffle
• What's found in non sequitur is absurd - it's a gem!
• Greenish-blue stone
• Birthstone for December
• Greenish blue; gemstone
• Aquamarine colour
• Greenish-blue gem
• Blue-green colour
• Opaque blue/green mineral or gemstone
• Quite sour sort of colour
• Opaque bluish-green gemstone
• Our quest when relaxing around island to find shade
• A shade sour and quite foul