c( TC ) Sparkle Effect Version 1.0

Mesh effect--not particles
Five effect/gradient options
Built-in glow options (or fine-tune it by editing it)
Texture animation speed and direction options
Optional rotation options
Transparency options (can also be done manually)
Full bright options
Can be tinted any color by editing and using SL's tinting UI.

DEMO available at in-world store location.