轴性、光性：一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的，其黑十字臂未达中心，形成中空的图案，俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。
the good point out of numerous very simple substances, which have an everyday form and surfaces organized in identical designs
晶及其石英岩类玉石是中低档宝玉石，虽比不上钻石、红蓝宝石的高贵，但在加工中如果构思巧妙而且加工精细，同样具有很高的价值。如中国传统的玛瑙“虾盘”、“龙盘”、“水漫金山�?水胆玛瑙摆件)都被誉为国家级宝玉石。
诗中道出一段唐代由盛变衰的史实。玄宗末年，杨贵妃得宠，三姐妹并封为国夫人。他们养尊处优，奢华至极，仆人用水晶盘将珍馐佳肴端到宴席上，美人觉得没有口味，懒得动筷子。作为“诗圣”作为“史诗”，紫驼一段写饮食之精美，不空发议论，只尽情揭露事实，无一刺讥语，无一慨叹声，却使人于以外得之：此诗之善讽也。以史为鉴，这样的世道，这样的人物，国家不出“安史之乱”那样的大祸反倒不正常了。
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。
Insert to phrase checklist Incorporate to phrase checklist [ C/U ] clear rock that looks like ice, or a bit of it
如果水晶内部杂质中有传说中人物的造型，如佛、星座、生肖等价值可能要高于同等颜色和净度的水晶。
Meanwhile, to make certain continued assist, we're displaying the location with out designs and JavaScript.
A crystal technique refers to the classification of crystals based upon the geometric arrangement and symmetry in their lattice buildings. There are seven major crystal methods:
16I opened the box and saw a bit of crystal snowflake in addition to a greeting card check here with "Satisfied Birthday" during the blank paper.我打开盒子并看见在白纸中有一片水晶雪花和一张写着“生日快乐”的贺卡。
Orthorhombic: These are generally rhombic prisms and dipyramids that resemble tetragons but without the need of square cross-sections.
Crystals are categorised generally classes, such as insulators, metals, semiconductors, and molecular solids. One crystal of an insulator is normally clear and resembles a bit of glass. Metals are shiny Until they have rusted. Semiconductors are occasionally shiny and sometimes transparent but are hardly ever rusty. A lot of crystals is usually labeled as one form of stable, while some have intermediate conduct. Cadmium sulfide (CdS) is usually prepared in pure sort and is a wonderful insulator; when impurities are added to cadmium sulfide, it gets to be an interesting semiconductor.
This crystal framework is liable for the exceptional physical and chemical Attributes of sodium chloride, like its high melting level, electrical conductivity, and talent to variety ionic bonds effortlessly.