Meanings of hexagonal prism in English

She selected a perfect hexagonal prism terminated by a pyramid.

Mold them into any shape, like a hexagonal prism.

Another was a single hexagonal prism of a dark-green mineral, striated down the sides, floating in a sealed glass dish of quicksilver.

We were moving over grey rocks of dense and massive formation, which in cooling had formed into hexagonal prisms.

The whole region appeared to consist of nothing but the same strange, uniform mineral conglomerate, crystallized into regular hexagonal prisms.

"This quartz crystal"-heturned it in the light, and the hexagonal prisms caught and reflected dazzling rays-" Ifoundin the limestone quarry on the Bay.