Traits

Rhomboid, most common orientation.

Smooth, circular or ovalline appearance

Multiple irregular growths from the same site

Two or more crystals joined together

Long, uneven projection

Uneven, uncut appearance

All right angles

Pyramid point, triangular or square

Multiple small, irregular growths

Shaped appearance, any shape, including stars, hearts, or diamonds

Rounded clusters

Pointed star shape, perhaps the rarest crystal type