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The word traces its origins back to the Latin lux, meaning "light", and generally implies radiance, gloss, or brilliance. A range of terms are used to describe lustre, such as earthy, metallic, greasy, and silky. Similarly, the term vitreous (derived from the Latin for glass, vitrum) refers to a glassy lustre. A list of these terms is given below.
A dorodango at an early stage. In this case, the lack of gloss is due to it not yet undergoing polishing with fine dust particles. Making the basic dorodango is a traditional pastime for school children. More recently, the process has been refined into the art of the hikaru ("shining") dorodango (光る泥だんご), which has a glossy surface ...
The OED defines pyrope (from Greek Πυρωπός, lit. "fire-eyed")" as: "In early use applied vaguely to a red or fiery gem, as ruby or carbuncle; (mineralogy) the Bohemian garnet or fire-garnet"; and carbuncle or carbuncle-stone (from Latin "carbunculus", "small glowing ember") as: "A name variously applied to precious stones of a red or ...
In textiles, lustre or luster is a physical property that makes them appear bright, glossy, and shiny. The amount of light reflected from the surface of a fiber is referred to as its luster. The level of luster is determined by how light reflects off the surface. For example, round surfaced fiber reflects more light and appears shinier than ...
Carbonado, commonly known as black diamond, is one of the toughest forms of natural diamond.It is an impure, high-density, micro-porous form of polycrystalline diamond consisting of diamond, graphite, and amorphous carbon, with minor crystalline precipitates filling pores and occasional reduced metal inclusions. [1]
Photos accompanying the department's social media posts showed the object on its side after its removal, which left a large indent in the ground because the rebar had been buried deep into the ...
Jet is a type of lignite, [1] the lowest rank of coal, and is a gemstone.Unlike many gemstones, jet is not a mineral, but is rather a mineraloid. [2] It is derived from wood that has changed under extreme pressure.
It was determined that the element copper was important in the coloration of the stone. [ 28 ] A large bluish-green tourmaline from Paraiba, measuring 36.44 mm × 33.75 mm × 21.85 mm (1.43 in × 1.33 in × 0.86 in) and weighing 191.87 carats (1.3536 oz; 38.374 g), is the world's largest cut tourmaline.