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
Blog Article
This concept applies equally in one, two, and 3-dimensional Areas. The whole crystal lattice is often made by frequently reproducing the pattern in the unit cell in all Instructions.
按照透明度指标，水晶越透明，价格越高，好的透明的水晶加工出的成品晶莹剔透、光辉耀眼。透明度高的水晶能提升颜色的艳丽，否则显得呆板无灵性。光学水晶要求全透明、无双晶、无杂质。工艺水晶要求透明、少裂、少瑕疵。熔炼水晶要求透明，可有较多裂纹。三者价值依次降低，熔炼水晶只能作为熔炼水晶玻璃的原料。在工艺水晶中，晶体较大的，可用来做水晶眼镜和雕刻高档工艺品，因而价格较高。
看做工：水晶制品加工过程分为两种，即磨工和雕工。如水晶项链、手链、耳环等属于研磨品；观音像、内画鼻烟壶等属于雕刻品。
Massive crystals of diamond are important gemstones. The crystal has other interesting Attributes; it's got the very best audio velocity of any solid and is the best conductor of heat. Besides diamond, the other common sort of carbon is graphite, that's a layered material. Each and every carbon atom has three coplanar near neighbours, forming an arrangement called the honeycomb lattice. Three-dimensional graphite crystals are obtained by stacking identical levels.
这种水晶观赏石特指水晶晶簇，它是众多单晶体集中生长在一起的晶体组合。晶簇以其晶莹剔透、独特造型而享誉水晶赏石界。
SMART Vocabulary: connected words and phrases and phrases Glass blower blowpipe bulletproof glass Slash glass fibreglass frosted glassware glaze glazed glazier glazing prism prismatic punty Pyrex reglaze unglazed vitreous vitrification vitrify See a lot more effects » You more info can even find associated text, phrases, and synonyms in the subject areas:
Springer Character remains neutral regarding jurisdictional claims in released maps and institutional affiliations.
26Some of the finest drinking glasses are comprised of direct crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》
13Nearly all pcs contain a quartz-crystal clock to manage their operation.几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。
⑤化学稳定�?非常好，在常温下仅溶解于氢氟酸，不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。
Browse cryptosporidiosis cryptosporidium cryptozoologist cryptozoology crystal crystal ball crystal clear idiom crystal lattice BETA copyright #randomImageQuizHook.filename #randomImageQuizHook.isQuiz Examination your vocabulary with our fun image quizzes
正常的水晶在生长时，多可以发现和柱形尖端棱线平行的生长纹（expansion lines）。由于在地底、岩洞中的生长空间多狭窄，尤其在遇到地震时，或地壳变动时，甚至容易遭到其他矿石的挤压，常常会压迫产生不同的「晶面」。还有，当水晶还是在液态状的时候，常常也会包覆着其他的矿石、泥灰一起结晶成长，如金红石（稍后变成发晶）、火山泥灰（稍后变成幻影水晶）等等。所有的这些，都是「自然的一部分」，请不要视为「瑕疵」。
⑨、喷砂：立体感弱，较平整，无凹凸感，机器雕刻文字、图形等后进行效果处理。成本低制作快。
水晶的价值根据品质、块体的大小、美感和产量多少的不同相差较大。遇到好的天然水晶要敢于下手，但好的水晶一般大家都想得到，值与不值，就要看经验了。由于天然水晶的开采和制作原因，没有瑕疵的水晶很难得到，纯净的饰品要达到与合成水晶媲美的品质，实在是很难得。另外，由于水晶的特性，在佩戴过程中，也会改变其等级，比如因为某种原因，有可能会逐渐产生较大裂纹。