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A 1919 painting by Fritz Stotz depicting women polishing and cleaning household silver. The conservation and restoration of silver objects is an activity dedicated to the preservation and protection of objects of historical and personal value made from silver.
The cleaner would first inspect the jewelry to ensure that the gemstones are accounted for and secured. Materials that can handle it are often placed in an ultrasonic bath using a cleaning solution and later put through a steam cleaner, while more sensitive materials will go through light brushing in soapy water.
Opalescent glass. The term "opalescent glass" is commonly used to describe glass where more than one color is present, being fused during the manufacture, as against flashed glass in which two colors may be laminated, or silver stained glass where a solution of silver nitrate is superficially applied, turning red glass to orange and blue glass to green.
Thus, cleaning efforts should not necessarily be concerned with the complete removal of all encrustations, but rather the careful thinning of these layers to a point where light can be transmitted through the glass at an acceptable level (Rauch 2004, 5). The simplest cleaning can be performed using carefully applied deionised water, although ...
Corroded metals and colored materials can stain ivory and should not be placed near them. [5] Dust can be removed from ivory using a soft brush. [5] Incorrect temperature. Although ivory is most susceptible to fluctuation in relative humidity, it should be kept at a stable temperature that does not exceed 25 °C (77 °F). [5]
The sap is processed to remove impurities. [5] The production of lacquerware involves a process of applying a ground layer, [ 6 ] oftentimes lacquer mixed with other substances such as clay or a layer of fabric , followed by many very thin layers of processed lacquer to a substrate, typically wood , and allowing them to dry completely, [ 6 ...
Coin cleaning is the controversial process of removing undesirable substances from a coin's surface in order to make it more attractive to potential buyers. The subject is disputed among the numismatic community whether cleaning coins is necessary. Those that argue in favor of cleaning are also in dispute on which methods work best.
One concave line represented 140/1000 fineness, a straight one 150 and a convex one 160. For example, a Diana head within a frame made in the shape of a 5-petal flower represented 5×160/1000 = 800 thousands fineness, a local silver standard commonly used in table forks and spoons. Meanwhile, a hexagonal frame represented 900 fine silver. This ...