Sapphire

Sapphire is a precious gemstone, a variety of the mineral corundum,

Emeralds

Emerald is a gemstone and a variety of the mineral beryl

Granite

Granite is a coarse-grained intrusive igneous rock composed mostly of quartz,

Ruby

Ruby, a gemstone composed of transparent red corundum (q.v.), a mineral

Sand Stone

Sandstone is a clastic sedimentary rock composed mainly of sand-sized silicate

Marble

Marble is a metamorphic rock composed of recrystallized carbonate minerals, most