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Corundum is a crystalline form of aluminium oxide (Al 2 O 3) typically containing traces of iron, titanium, vanadium, and chromium. [ 3 ] [ 4 ] It is a rock -forming mineral . It is a naturally transparent material, but can have different colors depending on the presence of transition metal impurities in its crystalline structure. [ 7 ]
Lustre (British English) or luster (American English; see spelling differences) is the way light interacts with the surface of a crystal, rock, or mineral. The word traces its origins back to the Latin lux , meaning "light", and generally implies radiance, gloss, or brilliance.
Still Life with Lobster, Drinking Horn and Glasses is a 1653 painting by Dutch artist Willem Kalf. [1] The painting is a still life , and has been referred to as "...a monument to luxury". [ 2 ] The horn in the painting dates to 1565, and is held in the Amsterdam Museum .
A large part of Persian lustreware production was in the form of tiles, usually star-shaped, with central animal or human figures, mostly single or in pairs, and ornament around the edges, and sometimes inscriptions. An eight-pointed star was the norm, made in effect of two rectangles with one rotated, but six-pointed stars are also common.
Glasses in a Basket is a 1644 Baroque still life painting by the Alsatian artist Sebastian Stoskopff. It is on display in the Musée de l'Œuvre Notre-Dame of Strasbourg , France . Its inventory number is MBA 1281 ("MBA" stands for Musée des Beaux-Arts ).
This is a descriptive list of Stone Age art, the period of prehistory characterised by the widespread use of stone tools. This article contains, by sheer volume of the artwork discovered, a very incomplete list of the works of the painters, sculptors, and other artists who created what is now called prehistoric art.
A 0.43-carat (0.086 g) teardrop-shaped cornflower blue Yogo sapphire. Sapphires are a color variety of corundum, a crystalline form of aluminium oxide (Al 2 O 3). [14] Corundum is one of the hardest minerals, rating 9 on the Mohs scale. [15] Corundum gems of most colors are called sapphires, except for red ones, which are called rubies. [16]
Medieval stained glass is the colored and painted glass of medieval Europe from the 10th century to the 16th century. For much of this period stained glass windows were the major pictorial art form, particularly in northern France, Germany and England, where windows tended to be larger than in southern Europe (in Italy, for example, frescos were more common).