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A durable igneous rock formed from slowly cooled magma beneath the Earth's surface.

A sedimentray rock made from primarily from the remains of ancient marine organisms. 

A gritty sedimentary rock formed from layers of compressed sand.

A fine-grained metamorphic rock that naturally splits into thin, flat sheets.

A dark volcanic rock created when lava cools quickly at the Earth's surface.

A beautiful metamorphic rock prized for its smooth texture and elegant patterns.

A soft sedimentary rock formed from compacted layers of mud and clay.

A naturally occuring volcanic glass with razor-sharp edges and a glossy finish.

A color variety of quartz admired for its rich patterns and earthy tones. 

A common material found in linestone and famous for its wide variety of colors.