granitic

/ɡrəˈnɪtɪk/
adjective
  1. Relating to or resembling granite, a hard, coarse-grained igneous rock.
    • The countertop had a beautiful granitic texture with flecks of quartz.
    • Geologists studied the granitic composition of the mountain range.
    • The granitic cliffs rose steeply above the valley.
  2. Extremely hard, unyielding, or durable in character or quality.
    • Her granitic determination helped her finish the marathon despite the injury.
    • The company's granitic policies made it difficult to negotiate new contracts.
    • He faced the criticism with granitic calm, refusing to be shaken.
Antonyms