Cases of minerals, gemstones and crystals
Carbonates, silicates, luminous rocks
Folded and faulted, fluorescent and lustrous
Cornwallite, cuprite, let’s undo the locks

Specimens golden and radioactive
Malachite green as is azurite blue
Vitreous, igneous, opaque, magnetic
Serpentine, quartz they have metamorphosed

Feel every crevice, crack, contour and cleavage
Shapes as diverse as their chemical code
Structures hexagonal, cubic, amorphous
Weight, texture, hardness; examine the lode