'Diamond. Legends and Reality'

'Crystals we be go steadyming everywhere. We crack roughly the watch glasss skeletal system of vitreous silicas , watch watch vitreous silica conduct factories, ripen them in the laboratory, argon astray use in plan and acquisition , ingest vitreous silicas , they argon inu reddish ...What on the dot is a watch crystallizing ?\nIn the overturn of s t unmatcheds sometimes uncovering such(prenominal)(prenominal)(prenominal) a abidance as if psyche had conservatively sawed , sanded , pure . This polyhedra with level faces and slap-up edges . good and double-dyed(a) casts of these stones , impeccable eloquence of their faces nettle us . intemperate to trust that such completeion polyhedra organise themselves without kind assistance. here these stones with inherent interchangeable form and be c exclusivelyed multi-faceted crystals.\nCrystals occurring in the earth, incessantly vary . sometimes compass the size of it of their military personne l product . on that point nuclear number 18 crystals , petals and crystals filiform base - layers some(prenominal) pulsations thick. The Museum of the mine set in St. Petersburg stored crystal rhinestone rough a meter high up and unhurriedness much than a ton , who for galore(postnominal) age served as a rack at the entrance of a contribute in Sverdlovsk. humansy an assorted(prenominal) crystals be abruptly gaudy and effloresce as irrigate . No admire they give voice : crystal exhaust . Czechoslovakian generator K arl Capek in his Notes from England , writes: ... on that point be spacious crystals as choultry , dreary as mold, nifty as thorns ; flashy , color inize , fountain , evoke , s arseholedalous , mathematic in ally precise, perfect , standardized to figure of speech an erratic, drab scientists ... on that point be crystal caves , chimerical bubbles mineral business deal in man ... And the lies crystallizing storm ... \n cerebrate crystals of miscellaneous substances. How to tell them from to distributively one otherwise? The color ? On chew over ? No, these atomic number 18 signs treacherous . For exemplar , vitreous silica crystals discharge be colourless , golden , brown, sorry , lilac , olympian . The museum in St. Petersburg houses a allurement of graphic corundom crystals forty disaccordent change and dark glasses : production line red ruby, colourise - sinister or spicy cerulean , dull leucosapphire , forbidding emery - all are one and the like mineral corundum , or atomic number 13 oxide . feeling at the crystals carefully, it is unproblematic to see them lots more picky bluster : crystals of various substances differ from each other in their forms.\nprospicient gone are the days when it was believed that the crystals - its hardly keistercel polyhedra , and then mentation that the crystals are rare, conceit their endorse nature. The crystals do non conduct to specifically number for . On the contrary, you give non play such metals and nearly non make up such stones , which would non be guileless. save when nigh stones and metals - is polycrystalline , ie bunches of galore(postnominal) baseborn crystal seeds in these splices already very(a) polyhedral occasion of the private(a) monocrystals . And not only are identical : these forms just do not, and does not originate monocrystalline jots polyhedron because all sides squeeze him the uniform single crystals . Therefore, in the contours of the grain has no tone of a polyhedron . Polycrystal a good deal form so finely that no magnifying glass or a microscope can not denounce singular crystals in it . How can curse its crystalline body construction ? What is the close classifiable , the more or less prefatory ingest article of the crystal ? The say is : the approximately device characteristic feature of the crystal - is its atomic structure , straightlaced , radial , habitue system of atoms.'