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Pietra dura
Pietra dura () or ''pietre dure'' (:ˈpjɛːtre ˈduːre) (see below), called parchin kari in South Asia, is a term for the inlay technique of using cut and fitted, highly polished colored stones to create images. It is considered a decorative art. The stonework, after the work is assembled loosely, is glued stone-by-stone to a substrate after having previously been "sliced and cut in different shape sections; and then assembled together so precisely that the contact between each section was practically invisible". Stability was achieved by grooving the undersides of the stones so that they interlocked, rather like a jigsaw puzzle, with everything held tautly in place by an encircling 'frame'. Many different colored stones, particularly marbles, were used, along with semiprecious, and even precious stones. It first appeared in Rome in the 16th century, reaching its full maturity in Florence. Pietra dura items are generally crafted on green, white or black marble base stones. Typically the resulting panel is completely flat, but some examples where the image is in low relief were made, taking the work more into the area of hardstone carving.
==Related arts and terms==
Pietre dure is an Italian plural meaning "hard rocks" or hardstones; the singular ''pietra dura'' is also encountered in Italian. In Italian, but not in English, the term embraces all gem engraving and hardstone carving, which is the artistic carving of three-dimensional objects in semi-precious stone, normally from a single piece, for example in Chinese jade. The traditional convention in English has been to use the singular ''pietra dura'' just to denote multi-colored inlay work.〔A distinction easily seen by comparing the (English ) and (Italian ) versions of the website of the Opificio delle pietre dure in Florence.〕 However, in recent years there has been a trend to use ''pietre dure'' as a term for the same thing, but not for all of the techniques it covers, in Italian.〔(Getty Center )〕 But the title of a 2008 exhibition at the Metropolitan Museum of Art, New York, ''Art of the Royal Court: Treasures in Pietre Dure from the Palaces of Europe'' used the full Italian sense of the term, probably because they thought that it had greater brand recognition. The material on the website speaks of objects such as a vase in lapis lazuli as being examples of "hardstone carving (''pietre dure'')"〔(Metropolitan Museum of Art ) ''Art of the Royal Court: Treasures in Pietre Dure from the Palaces of Europe''〕 The Victoria & Albert Museum in London uses both versions on its website, but uses pietra dura ("A method of inlaying coloured marbles or semi-precious stones into a stone base, often in geometric or flower patterns....") in its "Glossary",〔(V&A glossary )〕 which was evidently not consulted by the author of another page, where the reader is told: "Pietre dure (from the Italian 'hard stone') is made from finely sliced coloured stones, precisely matched, to create a pictorial scene or regular design".〔(Is it Marble? ) V&A〕 The English term "Florentine mosaic" is sometimes also encountered, probably developed by the tourist industry. Giovanni Montelatici (1864-1930) was an Italian Florentine artist whose brilliant work has been distributed across the world by tourists and collectors.
It is distinct from mosaic in that the component stones are mostly much larger and cut to a shape suiting their place in the image, not all of roughly equal size and shape as in mosaic. In pietra dura, the stones are not cemented together with grout, and works in pietra dura are often portable. Nor should it be confused with micromosaics, a form of mosaic using very small tesserae of the same size to create images rather than decorative patterns, for Byzantine icons, and later for panels for setting into furniture and the like.
For fixed inlay work on walls, ceilings, and pavements that do not meet the definition for mosaic, the terms intarsia or cosmati work/cosmatesque are better used. Similarly, for works that use larger pieces of stone (or tile), opus sectile may be used. Pietre dure is essentially stone marquetry. As a high expression of lapidary art, it is closely related to the jewelers art. It can also be seen as a branch of sculpture as three-dimensionality can be achieved, as with a bas relief.〔(Medici.org )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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