27Local economists have looked into their crystal balls and viewed some thing somewhat terrible.当地的经济学者们已预测到将会出现棘手的问题。《柯林斯英汉双解大词典》

12He experimented with once more in quite a few other towns and succeeded with Crystal Caramels.他又在其他几个城市再次尝试，并成功制出了水晶焦糖。

人造水晶分为熔炼水晶与养殖晶：据水晶专家汪毅的阐述，随着水晶的价值提高，喜欢的人增多，水晶也引起了作伪者的兴趣，现阶段中国水晶市场常见的造假方法为：

Large crystals of diamond are valuable gemstones. The crystal has other fascinating Qualities; it's got the highest seem velocity of any strong and is the greatest conductor of warmth. Aside from diamond, the opposite widespread type of carbon is graphite, and that is a layered materials. Each and every carbon atom has 3 coplanar around neighbours, forming an arrangement called the honeycomb lattice. 3-dimensional graphite crystals are obtained by stacking comparable levels.

2She was wearing a strand of crystal beads.她戴着一串水晶珠子。《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。

对任何宝石来说，颜色都是非常重要的，水晶也不例外。如果是水晶晶体是有颜色的，如粉水晶、黄水晶、紫水晶等，其颜色评价的最高标准则是明艳动人，不带有灰色、黑色、褐色等其他色调。如粉水晶，颜色以粉红为佳；紫水晶，要求颜色为鲜紫，纯净不发黑；黄水晶，要求颜色不含绿色、柠檬色调，以金橘色为佳。对于发晶来说，晶体的颜色也是很重要的。相同发丝的金发晶，晶体完全无色（白水晶）和晶体略偏茶色，肉眼的视觉观感也是有差别的，所以前者的价格会高于后者。

There's a related directive about crystal glass which differentiates concerning complete guide crystal, lead crystal and crystal.

水晶是有成色等级之分，影响水晶价位的因素很多，不像钻石以4C就可以判定，所以大家要多听多看多比较才能真正辨别出来。一般的标准是水晶石越大越好，越透越好，颜色越娇嫩越好，形状越典型越好。不过最重要还是自己喜欢，而选购时辨识真伪的方法大致有下列几种：

幽灵水晶，分绿幽灵，红幽灵，白幽灵等，主要组成为绿泥石，其中绿幽灵属于珍贵品种。

. The 2nd layer is shaded during the determine. It's the identical aircraft-triangular framework; the atoms sit in the holes fashioned by the primary layer. The primary layer has two equal sets of holes, even so the atoms of the second layer can occupy just one set. The third layer, labeled C

The arrangement of the atom’s electrons decides its chemical Homes. The Qualities of solids are generally predictable from the Attributes in their constituent atoms and molecules, and the various shell constructions of atoms are consequently accountable for the variety of solids.

The composition of your sodium atoms by itself, or the chlorine atoms alone, is fcc and defines the device mobile. The sodium chloride construction As a result is created up of two interpenetrating fcc lattices. The cesium chloride lattice (Determine 3A) click here is predicated around the bcc framework; every single other atom is cesium or chlorine. In this instance, the device mobile is really a dice. The third crucial composition for AB

矿物成分：针铁矿、赤铁矿、金红石、磁铁矿、电气石、石榴石、云母、绿泥石等形成了包裹体水晶，如发晶、钛晶、绿幽灵等，发晶中则含有肉眼可见的似头发状的针状矿物的包裹体形成。含锰和铁者称紫水晶；含铁�?；呈金黄色或柠檬�?)称黄水晶；含锰和钛呈玫瑰色者称蔷薇石英，即粉水晶；烟色者称烟水晶；褐色者称茶晶；黑色透明者称为墨晶。