What is a noun form of sparkle?

There isn't a single perfect noun form of "sparkle." It depends on what you want to emphasize. Here are a few options:

* Sparkle: This is the most direct option, functioning as a noun meaning "a flash of light."

* Example: "The diamond had a beautiful sparkle."

* Sparkle: This can also be used as a noun meaning "a quality of brightness or brilliance."

* Example: "The city lights added sparkle to the night sky."

* Sparkles: This plural form can be used for multiple flashes of light or individual sparkles.

* Example: "The fireworks showered the sky with sparkles."

* Sparkle: This can be used as a noun to refer to the act of sparkling.

* Example: "The children's eyes held a sparkle of excitement."

You could also use brilliance, shimmer, or glitter as more specific noun alternatives, depending on the context.