Possible Clues:

• Docking allowance in prison would cause a rift
• If it's split like this it may be bust in the middle
• Split (visible when wearing a low-cut dress)
• Course likely to lead to bad end
• Having accepted a grand, Conservative will crack
• Top of chest, part receiving admiring glances, for starters
• Clue vague, having lost us — answer written in which might be revealed in front
• Conservative must have consent to hoard silver for separation
• Sharp divide
• In rocks and minerals, a tendency to split in certain directions