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  2. Marble - Wikipedia

    en.wikipedia.org/wiki/Marble

    Marble is a metamorphic rock consisting of carbonate minerals (most commonly calcite (CaCO 3) or dolomite (CaMg (CO 3) 2) that have recrystallized under the influence of heat and pressure. [1] It has a crystalline texture, and is typically not foliated (layered), although there are exceptions. In geology, the term marble refers to metamorphosed ...

  3. Turquoise - Wikipedia

    en.wikipedia.org/wiki/Turquoise

    Turquoise. Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula Cu Al 6(PO 4)4(OH)8·4 H 2 O. It is rare and valuable in finer grades and has been prized as a gemstone for millennia due to its hue.

  4. Carrara marble - Wikipedia

    en.wikipedia.org/wiki/Carrara_marble

    Carrara marble, or Luna marble (marmor lunense) to the Romans, is a type of white or blue-grey marble popular for use in sculpture and building decor. It has been quarried since Roman times in the mountains just outside the city of Carrara in the province of Massa and Carrara in the Lunigiana , the northernmost tip of modern-day Tuscany , Italy.

  5. List of types of marble - Wikipedia

    en.wikipedia.org/wiki/List_of_types_of_marble

    Marble from Fauske Municipality in Norway Blocks of Carrara marble in Italy. The following is a list of various types of marble according to location. (NB: Marble-like stone which is not true marble according to geologists is included, but is indicated by italics with geologic classification given as footnote.

  6. Alabaster - Wikipedia

    en.wikipedia.org/wiki/Alabaster

    Alabaster is a porous stone and can be "dyed" into any colour or shade, a technique used for centuries. [13] For this the stone needs to be fully immersed in various pigmentary solutions and heated to a specific temperature. [13] The technique can be used to disguise alabaster.

  7. Marble sculpture - Wikipedia

    en.wikipedia.org/wiki/Marble_sculpture

    Marble is a metamorphic rock derived from limestone, composed mostly of calcite (a crystalline form of calcium carbonate, CaCO 3).The original source of the parent limestone is the seabed deposition of calcium carbonate in the form of microscopic animal skeletons or similar materials.

  8. Conservation and restoration of movable cultural property

    en.wikipedia.org/wiki/Conservation_and...

    Types of metals include "gold, silver, copper, iron, lead, tin, nickel, zinc, aluminum, chromium, titanium, and their alloys". [22] Metal sculptures are prone to corrosion from air pollution and moisture in the air. [23] Interventive treatments for metals is an irreversible procedure that need consideration prior to work.

  9. Synthetic diamond - Wikipedia

    en.wikipedia.org/wiki/Synthetic_diamond

    Lab-grown diamonds of various colors grown by the high-pressure-and-temperature technique. Laboratory-grown (LGD), also called lab-grown diamond, [1] laboratory-created, man-made, artisan-created, artificial, synthetic, or cultured diamond, is diamond that is produced in a controlled technological process (in contrast to naturally formed diamond, which is created through geological processes ...

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