Possible Clues:

• Bit of glittery trim
• Sequin half gleams under bridge
• Glittery bit
• Under lid of sparkly piano, view shiny disc
• Dress adornment
• Spy endlessly has fish on glittering plate
• Small soft fish scale, say, reflecting the light
• Bit of decoration
• Colourful spot of singular power on fish
• Resort missing out on a turn to shine