Amethyst is a gemstone, a variety of violet Quartz with the chemical formula is SiO2. Because it has a hardness of seven on the Mohs Scale, amethyst is suitable for use in jew â¦ elry. Due to its crystal quantity and relative rarity, larger samples can broach several hundred dollars.
An artist working on a watercolor using a round brush. Watercolor (American English) or watercolour (Commonwealth and Ireland), also aquarelle (French loanword), a diminutive of the Latin for water, is a painting method in which the paints are made of pigments suspended in a water-based solution. Watercolor refers to both the medium and the resulting artwork. The traditional and most common supportâmaterial to which the paint is appliedâfor watercolor paintings is paper. Other supports include papyrus, bark papers, plastics, vellum, or leather, fabric, wood, and canvas.
The important distinction between them is that the watercolorist applies the paint in transparent washes and uses the paper as the source of all whites; the gouache painter mixes colors directly with white paint to create each of the hues and tints and completely covers the surface of the paper resulting in a thick velvety surface texture.