Educational Insights Metamorphic Rock Collection Authentic rocks, fossils, and minerals, hand selected for their color, texture, and beauty. Perfect for study and fun. Features 12 large metamorphic rocks naturally formed by intense heat and pressure Each collection includes a four-color identification chart, self-adhesive labels, handy storage tray, and information-packed guide. Brings Earth science lessons to life for students Engaging science activity for kids ages 8 and up.