sparriest

/ˈspɛriəst/
adjective
  1. Superlative of sparry: most resembling or containing spar (a type of mineral); most crystalline or shiny.
    • Geologists prize the sparriest specimens for their clarity and structure.
    • Of all the rock samples, this one is the sparriest, with visible crystal formations.
    • The miner pointed to the sparriest vein in the cave wall.
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