"gel box"

Pure translucent to white, rhombic cleavages, Mohs’ hardness of 3.

Spinel group; iron-black, massive; natural magnet.

Clear, pure cleavages, Mohs’ hardness of 2.

The Most Abundant Minerals in the Earth’s Crust

Clear rhombs showing double refraction.

Red, earthy, in natural chunk form; common pigment ore.

Good grade, brass-yellow copper ore, massive.

Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.

Feldspar group; calcium end member plagioclase crystals in pyroxene matrix.

Gray, crystalline, massive, 'Alberene stone'.

Feldspar group; greenish gray alkali feldspar, coarse crystalline, some iridescence.

Mica group; cut sheets showing basal cleavages. Books and sheets in bulk pack.

Deep blue, massive, with nepheline; key feldspathoid.

Crystals and crystal sections up to 1", Mohs’ hardness of 9.

Deep purple crystal clusters.

Dive into the colorful world of fluorescent minerals with this all-in-one educational set.