The mineral occurs as white or colorless orthorhombic crystals.

This means pure diamond should transmit visible light and appear as a clear colorless crystal.

It resembled a crystal the size and shape of a walnut, colorless but for a flickering dark flaw at the center.

PPh exists as relatively air stable, colorless crystals at room temperature.

It forms colorless crystals that are readily soluble in most organic solvents.

Diquat is an organic solid of colorless or yellow crystals.

The blue particles collect at the bottom of the pot, while the impurities and colorless crystals remain in the mass.

It is most commonly available as colorless crystals or a white powder.

Generally, oximes exist as colorless crystals and are poorly soluble in water.

To make the subterfuge more believable, we chose one of the very rare colorless crystals.