sparkle (v.) Look up sparkle at Dictionary.com
c. 1200, "to shine as if giving off sparks," frequentative verb form of Middle English sparke (see spark (v.)). Meaning "emit sparks" is from late 15c. Related: Sparkled; sparkling.
sparkle (n.) Look up sparkle at Dictionary.com
early 14c., from sparkle (v.), or a diminutive of spark (n.).