Color Names

Gypsum

Plaster dust, the fine powder of a soft mineral, settles.

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Gypsum is a white.

It can be described as pale, delicate, faded and almost grey.

Set in black, because black reads best on it.

Gypsum

Gypsum

Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, drywall and blackboard or sidewalk chalk. Gypsum also crystallizes as translucent crystals of selenite. It forms as an evaporite mineral and as a hydration product of anhydrite. The Mohs scale of mineral hardness defines gypsum as hardness value 2 based on scratch hardness comparison.

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gypsum

Noun

  1. A mineral consisting of hydrated calcium sulphate. When calcinated, it forms plaster of Paris.
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