air
symmetry
light
pace

the last ten

this crystal
The Nakaya diagram: habit by temperature and supersaturation over ice, with water saturation in blue. Dots: the air above Ghent every 100 m below freezing, brighter where cloudy. ● this crystal. Dashed: the ideal band; ○ the air it grew in before or after.
the settings

air

symmetry

light

pace

the last ten Each grows again in the same air and with the same chance.

the hand

Drag to turn the crystal, scroll or pinch to bring it nearer, double-click or double-tap to let it turn on its own. Keys: arrows to turn, + and − to bring it nearer, 0 to let it turn; n another crystal, i the air, y symmetry, l the light, s or Escape this panel.

sources

Crystals: the Gravner–Griffeath model (2009), attachment after Libbrecht (2019); diagram after Kobayashi (1961).