How Much You Need To Expect You'll Pay For A Good Crystal
How Much You Need To Expect You'll Pay For A Good Crystal
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对这类水晶晶簇观赏石的欣赏与评价，主要是强调晶体的完整、品种的名贵（如紫水晶、烟晶、发晶等）、造型奇特、含有名贵晶体（如辰砂、辉锑矿等）伴生等。晶簇产于矿床晶洞中，长相完美的并不多见，要完整无损地采集下来，又比较困难，故而采集起来代价较大，精品晶簇价值也就昂贵了。
③、粗抛光：是将模具压出之毛胚，以金刚石盘直接磨出成品之刻线。④、细抛光：在粗抛光之后，以抛光粉来磨成品至晶莹剔透为止。
对水晶进行评价主要依据其颜色、透明度、大小、净度、特殊图案及是否有光学效应等方面。以颜色纯正，浓度较高，内部无瑕为好。种类上紫晶最贵，其次为黄晶、烟晶、无色水晶和芙蓉石。有特殊光学效应的水晶的价格更高。
养殖晶：养殖晶是指，用天然水晶做种子，然后赋予天然水晶生长的高压条件，养殖器中有富含二氧化硅的分子。然后二氧化硅分子围绕天然水晶种生长，这样的水晶成分（分子式）与天然水晶是一摸一样的，唯一有差别的是，这样的水晶磁场作用没有天然水晶强。
25If you are a Billy Crystal supporter, you are going to enjoy this movie.如果你是比利·克里斯特尔的影迷，你就会喜欢这部电影。《柯林斯英汉双解大词典》
⑧、雕刻：立体感强，工艺高，做工精细，成本高。分手工雕刻图形、机器雕刻文字。
石英：《广雅》称水晶叫石英，色白如莹者又叫白。为附的异形字。司马相如《子虚赋》就�?�?雌黄�?�?之句。苏林解释：�?�?，白石英�?”。
11I meticulously opened the bundle and found a crystal bell inside of.我小心地打开包裹，发现里面有一个水晶钟。
Quite a few crystals behave like butter in that they are tricky at minimal temperatures but gentle at bigger temperatures. They can be termed solids in any way temperatures underneath their melting issue. A doable definition of the sound can be an object that retains its form if remaining undisturbed. The pertinent issue is how long the item keeps its form. A extremely viscous fluid retains its condition for an hour but not a 12 months. A good must preserve its form for a longer time than that.
22Working from what The united states previously is familiar with about by itself, the bureau's professionals together with other demographers supply an irresistible, if clouded, crystal ball amongst their visions.
看孔眼：对于缀穿水晶制品（如项链、手链、佛珠），要看孔眼是否平直，孔的粗细是否均匀，有无细小裂纹。孔壁必须清澈透明，无“白痕”。
The arrangement of an atom’s electrons decides its chemical Houses. The Houses of solids are often predictable from the Attributes in their constituent atoms and molecules, and the various shell buildings of atoms are for that reason responsible for the range of solids.
⑤、打孔：是在水晶成品未完成前，根据其所需打孔之尺寸及位置，以钻头加工，如制表件、笔筒、瓶孔等。
Binary crystals are present in lots of buildings. Some pairs of elements form multiple composition. At place temperature, cadmium sulfide may perhaps crystallize possibly from the zinc blende or wurtzite construction. Alumina also has two achievable buildings at space temperature, α-alumina (corundum) and β-alumina. Other binary crystals exhibit unique constructions at unique temperatures. Among the many most sophisticated crystals are People of silicon dioxide (SiO2), which has seven unique constructions at a variety of check here temperatures and pressures; the commonest of those structures is quartz.