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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.
According to Armenian "The Queen of the Serpents" legend, the serpents of Mount Ararat select a queen who destroys invading armies of foreign serpents, and carries in her mouth a "wonderful stone, the Hul, or stone of light, which upon certain nights she tosses in the air, when it shines as the sun. Happy the man who shall catch the stone ere ...
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.
Heat can either improve or spoil gemstone color or clarity. The heating process has been well known to gem miners and cutters for centuries, and in many stone types heating is a common practice. Most citrine is made by heating amethyst, and partial heating with a strong gradient results in "ametrine" – a stone partly amethyst and partly citrine.
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]
For some extra cool-girl points, she popped on some black shades, carried a black leather crossbody, and added a hint of red via a glossy manicure. Naomi Watts in New York City on January 22. Aeon ...
Natural stone is used as architectural stone (construction, flooring, cladding, counter tops, curbing, etc.) and as raw block and monument stone for the funerary trade. Natural stone is also used in custom stone engraving. The engraved stone can be either decorative or functional. Natural memorial stones are used as natural burial markers.
Tom Cruise in ‘Collateral’, ‘Mission: Impossible: Dead Reckoning’ and ‘Tropic Thunder’ (iStock/Paramount)