Possible Clues:

• Pale green fruit with no core left
• Pale greenish part of rubbery leaves
• Gemstone, part of robbery loot
• Mineral like emerald
• Stone section of folly rebuilt when knocked over
• Green gem mineral
• Stand on railway line to see stone
• She's back from July rebellion
• A gem of a girl?
• Fruit with centre removed and left (a stone)