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Cabochon
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A gemstone without facets that has a highly polished and rounded surface with a flat back. Stones normally finished with this technique are opal, moonstone, star ruby and sapphire. Also called a “carbuncle.”
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Calciferous Powder
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Powder containing calcite or carbonate of lime.
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Calligraphy
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The art of beautiful writing. Broadly, a flowing use of line, often varying from thick to thin. Artistic, stylized, or decorative handwriting or lettering, using a quill pen or brush, as in Chinese, Korean, or Japanese works.
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Came
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Pronounced like “name.” The extruded H-shaped channel which is fitted around individual pieces of glass so that they can be assembled into a panel. Came can be made of lead, zinc, brass or copper.
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Cameo/Intaglio
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A technique in which the finished glass form is covered with another coating of glass of a different color into which is carved or etched a design which exposes the base color.
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Canary Wood
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The name of wood that is applied to the timber of tulip, Australian eucalyptus, and Indian mulberry trees.
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Cane
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A thin glass rod formed by stretching a piece of hot glass; used for decorative accents.
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Canvas
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Closely woven cloth used as a support for paintings. It is a plain, natural fiber cloth that is stretched over a frame, thus producing a flat, solid surface on which to paint
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Canvas Transfer
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A canvas transfer is a print or poster image that has been transferred and fixed to a canvas surface. The result is a piece of printed art that has the appearance of an original canvas painting without the high cost usually associated with original artwork.
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Carat
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A unit of weight, originally determined by a carob seed, used in measuring gemstones. A carat contains 100 points. Not to be confused with "karat".
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Carborundum Printmaking
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In carborundum printmaking, the areas in the plate which are to print black are covered with a mixture of carborundum, an industrially produced substance, and a binding agent. When dry that area retains ink just as in any other intaglio process. Carborundum printing gives a rich velvety surface.
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Caricature
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A representation in which the subject's distinctive features are exaggerated.
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Carnauba Wax
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A wax made from the palms of the carnauba tree, used for polishing fine furniture.
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Cartoon
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A humorous or satirical drawing. A drawing completed as a full-scale working drawing, usually for a fresco painting, mural, or tapestry.
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Cartouche
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An ornamental shield or scroll, often placed above door openings or fireplace mantels, that is often inscribed, carved, or painted.
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Carved Glass
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Also called stage-blasted. Glass which has been sandblasted to different depths.
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Carved Rug
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A rug in which the pile is cut to create a three-dimensional design or pattern.
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Carving
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A subtractive process in which a sculpture is formed by removing material from a block or mass of wood, stone, or other material, using sharpened tools. Carving is one of the oldest sculptural techniques. It is a reductive process; starting with a solid block, the sculptor removes material using chisels and other tools to 'reveal' the finished form. Traditional carving materials include stone, especially marble, and fine grained woods.
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Cased Glass
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Blown glass that has two or more layers of different colors. The upper layers may be etched or sandblasted to reveal the glass underneath.
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Casein Paint
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Also known as Buttermilk Paint, this paint has an opaque watercolor appearance and uses casein (a glue precipitated from milk by rennin) as a binding ingredient. Casein paint may be used for light impasto on paper or board, for underpainting, wall decoration.
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Cast
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An impression made of an object, by pouring a plastic substance into a mold and letting harden, that is then filled with a substance such as plaster or metal to create a sculpture.
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Cast Glass
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Molten glass that has been poured into a mold and allowed to anneal as a shaped form.
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Casting
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Casting is a method of producing one or more copies of a sculpture. Typically, the original sculpture is modeled as usual and covered with a moulding material which sets hard when dry. The mould is then separated to release the original sculpture. Once the mould is reassembled, the casting material is poured in to the void and left to set. Traditionally, molten bronze is used as the casting material, but modern alternatives include resin. When the cast sculpture has cooled, or cured, the mould is again separated to release it, and reassembled ready to cast the next copy.
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Cathedral Glass
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Glass which is composed of the same ingredients as antique glass, but rolled or formed in a machine to a uniform texture.
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Celadon Glaze
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French name for a green, gray-green, blue-green or gray glaze produced with a small percentage of iron as the colorant.
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Ceramics
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Objects made of clay hardened into a relatively permanent material by firing. Also, the process of making such objects. Ceramics is a rather basic material for sculptures. It is not particularly expensive. It can be easily shaped into almost any figure when it is wet. After it dries it is usually burned in a special oven to keep it solid. Ceramics tend to break easily, so on delivery make sure it is handled carefully.
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Chamfer
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A beveled edge in metal art.
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Champleve
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A method for decorating metal in which hollowed-out areas are filled with colored enamel and then fired.
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Charcoal
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A dark, porous carbon, prepared by charring wood, that is used for drawing. Charcoal crayons are available in various degrees of thickness and hardness.
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Chased
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Metal patterned by striking with a hammer or other non-cutting tool. Applied to one surface of the metal only, this technique is often combined with repousse to achieve greater detail.
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Chasing
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A technique in which steel punches are used to decorate and/or texture a metal surface.
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Chiaroscuro
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In drawing, painting, and the graphic arts, chiaroscuro (ke-ära-skooro) refers to the rendering of forms through a balanced contrast between light and dark areas. The technique that was introduced during the Renaissance, is effective in creating an illusion of depth and space around the principal figures in a composition. Leonardo Da Vinci and Rembrandt were painters who excelled in the use of this technique.
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China
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1. A porcelain clay body, with up to one percent absorption, usually translucent; industry fires high to vitrification and glazes low; studio potters usually fire clay and glazes together to high temperatures by the traditional Asian method, or make low-fire porcelain by the European method. 2. Whiteware, vitreous and hard, sometimes translucent. 3. a general term used when discussing any kind of tableware.
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China Clay
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Primary or secondary kaolin, refractory, not very plastic, white burning, rare in the world, found in the U.S.A. in a few South-Eastern states; used in the blending of all whiteware and porcelain bodies.
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China Paint
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Low fire glaze decoration applied to already glazed and fired whiteware or porcelain.
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Chine Colle
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Small pieces of paper that are glued to a print in the printing process; added as visual embellishments.
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Choke Ties
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Lengths of cord wrapped tightly around the warp threads immediately after warping to maintain the order of the warp during its transfer to the loom.
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Chrome Tanning
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Tanning process using salts of chromium to make leathers that are especially supple and suitable for bags, garments, etc.
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Chromira
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Chromira prints are continuous tone photographic prints exposed digitally by a scanning LED light source. The Chromira is a digital enlarger that exposes photographic paper with LEDs. The photo paper is then processed in chemistry, creating a continuous-tone, true photographic print. It is different from inkjet printers because it exposes photographic paper (no ink is involved), whereas inkjet printers physically lay ink on paper or canvas.
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Chromogenic
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Identifying a substance or process that produces color.
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Chromo-lithograph
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A colored lithograph, with at least three colors, in which each color is printed from a separate surface (stone or aluminum) and where the image is composed from the layering of those colors.
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Chrysocolla
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A mineral of bluish-green color, occurring from the chemical reaction of exposing water, air and other elements to copper. Chrysocolla grows on copper and forms highly decorative patterns on nearby stones.
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Cibachrome
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Cibachrome refers to both the trademarked photographic paper Cibachrome and the process of making prints with such paper. Cibachrome is a positive printing process; the prints are produced from slides or transparencies, not color negatives. Azo dyes embedded in the paper’s emulsion are bleached away in proportion to the exposure during paper processing (called “dye-bleach reversal”).
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Cinnabar
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Red sulfide of mercury used as pigment in painting.
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Classical Style
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1. The art of ancient Greece and Rome. More specifically, Classical refers to the style of Greek art that flourished during the fifth century B.C. 2. Any art based on a clear, rational, and regular structure, emphasizing horizontal and vertical directions, and organizing its parts with special emphasis on balance and proportion. The term classic is also used to indicate recognized excellence. Loosely, the term “classical” is often applied to all the art of ancient Greece and Rome, as well as to any art based on logical, rational principles and deliberate composition.
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Clay
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1. Fine-grained earth materials formed by the decomposition of igneous rock; when combined with water, clay is plastic enough to be shaped; when dry, it is strong; when subjected to red heat or above, it will become progressively more dense and rock-like. 2. A compound of decomposed and altered feldspathic rock consisting of various hydrated silicates of aluminum along with non-plastics, such as quartz, and organic matter. It is also used as a source of alumina and silica in glazes.
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Clichi Verre
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Literally, “glass negative.” An artist produces a “negative” by drawing an image with a sharp instrument on the darkened, opaque surface of a dry or wet glass negative. The plate is then contact printed directly on to a sheet of light sensitive photographic paper or exposed under direct sunlight.
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Cloisonne
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Enameling in which the colors are separated by thin metal ribbons or wires to maintain the pattern and keep the melting colors from running together.
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Cocobolo Wood
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A wood with variegated orange, yellow and dark red color with irregular black stripes. Native to Mexico, Panama, Costa Rica, and Nicaragua.
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Coil
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A method of forming pottery or sculpture from rolls of clay that are smoothed together to form the sides of a jar or pot.
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Cold Cast Bronze
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A modern method of casting sculptures in which the casting material is a resin mixed with powdered bronze. The finished sculpture has a surface which looks very similar to a traditionally cast bronze although it tends to be much lighter.
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Cold Connected
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The joining together two pieces of metal without the use of heat. Rivets or screws are examples of cold connections.
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Cold Mounting
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Method of attaching a photograph directly to a mount board using mounting tissue, a paper coated with glue. Cold mounting provides the photograph with a strong base, to protect it from bending or cracking.
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Collage
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A work of art made by pasting various materials such as bits of paper, cloth, etc. onto a piece of paper, board or canvas.
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Collagraph
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An intaglio printing process that uses a printing plate that has elements collaged to it. A collograph plate may also be used to make embossed prints.
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Collogravure
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The plate is covered with glue, and drawn into with any implement. When dry, it is inked, wiped and printed.
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Color Field Painting
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A style of painting prominent from the 1950s through the 1970s, featuring large “fields” or areas of color, meant to evoke an aesthetic or emotional response through the color alone. The movement grew out of Abstract Expressionism, in which large stained or painted areas or "fields of color evoke aesthetic and emotional responses.
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Color Wheel
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A circular grid that represents the colors based on color theory. This grid clearly shows the relationships colors have with each other (complimentary, opposite, etc.).
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Comb
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