Related Clues:

• Oyster's prize
• Girasol, e.g.
• Autumn birthstone
• Modern June birthstone
• It may be stranded
• Birthstone for some Scorpios
• A gem of a lady?
• Certain gemstone
• Harbor of Hawaii
• Beauty
• Bringer of bad luck, in legend
• Shade of gray
• Australian gem
• Libra's stone
• It's less dense than quartz