Hello. Ian Murphy here. What? You say you have difficulty retrieving a shard? Don't worry. I will only give you one location, but it's rather important if you want to get ALL the Crystal Shards! On Pop Star, the third level holds a shard visible, but hard to get. It is in a dugeon under a green block. To retrieve it, use a double-cutter star (green). Be patient. I will soon find another difficult shard location!