Related Clues:

• Lustrous round structures found in sea-creatures
• Lustrous structures in oysters
• Lustrous structures found in oysters
• Gemstones produced by molluscs
• They're found in the shells of oysters
• The French female has an old wound from the East Indies
• Sound soft, noble and, all told, precious
• Diver's quest
• Cultured ones?
• They may be cultured
• Stones left in fruit
• Under pressure, noble types can become paragons
• Oyster creations
• Lustrous structures in bivalves
• Choice examples