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chalcedony    
n. 玉髓

玉髓

chalcedony
n 1: a milky or greyish translucent to transparent quartz [synonym:
{chalcedony}, {calcedony}]

Chalcedony \Chal*ced"o*ny\ (k[a^]l*s[e^]d"[-o]*n[y^] or
k[a^]l"s[-e]*d[-o]*n[y^]; 277), n.; pl. {Chalcedonies}
(-n[i^]z). [ L. chalcedonius, fr. Gr. CHalkhdw`n Chalcedon, a
town in Asia Minor, opposite to Byzantium: cf. calc['e]doine,
OE. calcidoine, casidoyne. Cf. {Cassidony}.] (Min.)
A cryptocrystalline, translucent variety of quartz, having
usually a whitish color, and a luster nearly like wax.
[Written also {calcedony}.]
[1913 Webster]

Note: When chalcedony is variegated with with spots or
figures, or arranged in differently colored layers, it
is called {agate}; and if by reason of the thickness,
color, and arrangement of the layers it is suitable for
being carved into cameos, it is called {onyx}.
{Chrysoprase} is green chalcedony; {carnelian}, a flesh
red, and {sard}, a brownish red variety.
[1913 Webster]


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  • Chalcedony - Wikipedia
    Chalcedony has a waxy luster, and may be semitransparent or translucent It can assume a wide range of colors, but those most commonly seen are white to gray, grayish-blue or a shade of brown ranging from pale to nearly black
  • The 7 Different Types Of Chalcedony (With Photos) - Rock Chasing
    Get to know the different types of chalcedony, what makes each of them unique, and what each of them looks like in this article
  • Chalcedony: Meaning, Properties, and Uses - Wisdom Of The Spirit
    Whether you’re a crystal enthusiast, a jewelry lover, or just curious about its metaphysical properties, chalcedony has something to offer In this guide, we’ll explore what chalcedony means, its key properties, and how you can use it in your daily life
  • The Many Different Faces of Chalcedony: More Than Just a . . .
    Chalcedony is a cryptocrystalline form of silica, and often the subject of much debate among rockhounds While it’s simple to define, it’s also associated with only a few types of stones despite the truly diverse array of different chalcedony forms found in nature
  • Chalcedony: Mineral information, data and localities.
    In the strict sense, and in the scientific literature, "chalcedony" designates aggregates of parallelly grown ("fibrous") quartz crystals of microscopic and sub-microscopic size
  • Chalcedony | Agate, Quartz Jasper | Britannica
    Chalcedony, a very fine-grained (cryptocrystalline) variety of the silica mineral quartz (q v ) A form of chert, it occurs in concretionary, mammillated, or stalactitic forms of waxy lustre and has a compact fibrous structure, a fine splintery fracture, and a great variety of colours—usually
  • Chalcedony | Properties, Formation, Occurence » Geology Science
    Chalcedony is a microcrystalline form of silica, composed of silicon dioxide (SiO2) It is a mineral that is found in a variety of colors and patterns and is often used in jewelry making, decorative objects, and industrial applications





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