Possible Clues:

• Spray, where two rivers meet, is an aesthetic thing (5,1'3)
• Collector's piece (5,1'3)
• Collectible item of artistic worth (5,1'3)
• Small item considered to be of artistic worth (5,1'3)
• Something beautiful died — died through black magic?
• Collectable item of artistic worth (5,1'3)
• Exquisite piece of polished stone - old boy has to move quickly to secure it