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Crocoite is commonly found as large, well-developed prismatic adamantine crystals, although in many cases are poorly terminated. Crystals are of a bright hyacinth-red color, translucent, and have an adamantine to vitreous lustre. On exposure to UV light some of the translucency and brilliancy is lost.
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.
Christite has an adamantine luster and leaves behind an orange streak. [3] Its crystal system is monoclinic with possible crystal classes of twofold symmetry, mirror plane symmetry, and twofold with a mirror plane. This means it can have radial symmetry, mirror plane symmetry, or mirror plane symmetry perpendicular to the two-fold axis. [5]
The luster of a diamond is described as "adamantine", which simply means diamond-like. Reflections on a properly cut diamond's facets are undistorted, due to their flatness. The refractive index of diamond (as measured via sodium light, 589.3 nm) is 2.417. Because it is cubic in structure, diamond is also isotropic
In fiction, Adamant is referred to in the film Forbidden Planet (as "adamantine steel"), many books (such as The Adventures of Tom Sawyer, The Faerie Queene, Gulliver's Travels, His Dark Materials, The Lord of the Rings, Mathilda by Mary Shelley, and A Midsummer Night's Dream) and many games (such as Dungeons & Dragons, Final Fantasy and ...
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Adamantine may refer to: Adamant or adamantine, a generic name for a very hard material; Adamantine (veneer), a patented celluloid veneer; Adamantine lustre, a property of some minerals; Adamantine spar, a mineral; Adamantine, a 2018 album by Burgerkill "Adamantine", a 1996 song by Thirty Ought Six, released as Mute Records 196
Synthetic rutile can be made in a variety of colors by doping. The high refractive index gives an adamantine luster and strong refraction that leads to a diamond-like appearance. The near-colorless diamond substitute is sold as "Titania", which is the old-fashioned chemical name for this oxide.