Crystal Contour Collection – COPPER, ROSE QUARTZ & OPAL

Contour may refer to:

• Contour (linguistics), a phonetic sound
• Pitch contour
• Contour (camera system), a 3D digital camera system
• Contour Airlines
• Contour flying, a form of low level flight
• Contour, the KDE Plasma 4 interface for tablet devices
• Contour line, a curve along which the function has a constant value
• Contour drawing, an artistic technique
• A closed path in the mathematical method of contour integration
• Boundary (topology) of a set

Contours may refer to:

• Contours (album), by Sam Rivers
• The Contours, a soul music group

Contouring may refer to:

• The makeup technique contouring

A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations. The scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification.

The word crystal derives from the Ancient Greek word κρύσταλλος (krustallos), meaning both "ice" and "rock crystal", from κρύος (kruos), "icy cold, frost".

Examples of large crystals include snowflakes, diamonds, and table salt. Most inorganic solids are not crystals but polycrystals, i.e. many microscopic crystals fused together into a single solid. Polycrystals include most metals, rocks, ceramics, and ice. A third category of solids is amorphous solids, where the atoms have no periodic structure whatsoever. Examples of amorphous solids include glass, wax, and many plastics.

Despite the name, lead crystal, crystal glass, and related products are not crystals, but rather types of glass, i.e. amorphous solids.

Crystals, or crystalline solids, are often used in pseudoscientific practices such as crystal therapy, and, along with gemstones, are sometimes associated with spellwork in Wiccan beliefs and related religious movements.