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
Not all crystals are Similarly crystalline. There are often impurities, and the ionic & covalent in between molecules can develop vastly diverse structures from a similar materials. A terrific illustration of this are diamonds and graphene.
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。
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。
We have published about around three hundred stones from the mineral kingdom! Read about Just about every stone's one of a kind origin, background, and energies underneath.
2She was putting on a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
Encyclopaedia Britannica's editors oversee topic locations where they've substantial knowledge, no matter whether from yrs of practical experience received by engaged on that articles or through analyze for an advanced diploma. They compose new information and confirm and edit material obtained from contributors.
解理：无解理。所谓解理是指矿物被打击时，沿一定方向有规则地裂开形成光滑平面的性质。根据解理的程度可以分为五类：极完全解理、完全解理、中等解理、不完全解理和无解理，水晶属于无解理。
26Some of the best ingesting glasses are comprised of lead 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》
Lots of crystals behave like butter in that they are difficult at small temperatures but soft at higher temperatures. They are identified as solids in any respect temperatures below their melting issue. A feasible definition of a reliable is undoubtedly an item that retains its shape if still left undisturbed. The pertinent problem is how long the thing keeps its shape. A highly viscous fluid retains its form for one hour although not a calendar year. A stable will have to hold its form extended than that.
22Working from what The united states already understands about alone, the bureau's gurus and also other demographers present an irresistible, if clouded, crystal ball amongst their visions.
Within the Cambridge English Corpus We are saying the chain topology within the large w area functions as being the proverbial ' scratch-on-theglass ' wanted within the natural chemistry laboratory to make crystals. In the Cambridge English Corpus Consistent-stress and temperature molecular-dynamics simulations of crystals in the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. Within the Cambridge English Corpus Along with these, dust particles happen to be observed in low-temperature plasmas, like People Utilized in plasma processing and plasma crystals. From your Cambridge English Corpus The ultimate part of the reserve concentrates on peculiarities of strongly coupled dusty plasmas, such as the formation of dust crystals and connected desirable forces. From your Cambridge English Corpus Full characterization of injury threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. Through the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or even more irregular, Most important morphologies were not observed. Through the Cambridge English Corpus See all samples of crystal These illustrations are from corpora and from resources online. Any views while in the examples do not depict the opinion of your Cambridge Dictionary editors or of Cambridge College Push or its licensors.
Fig. 1: Schematic of crystal formation from developing blocks made up of a particle Main check here and a shell of DNA ligands attached for the particle floor.
水玉：中国最古老的称法叫水玉，意谓似水之玉，又说是 �?千年之冰所�?�?。唐代诗人温庭筠《题李处士幽居》写道：�?水玉簪头白角巾，瑶琴寂历拂轻�?”。水玉一词最早频繁出于《山海经》：�?又东三百里，日堂庭之�?…�?多水�?”；�?丹山出焉，东南流注于洛水，其中多水玉 ”；�?逐水出焉，北流注于渭，其中多水玉 ”。司马相如《上林赋》曰�?�?水玉磊河 �?。水晶得名水玉，古人是看�?�?其莹如水，其坚如�?�?的质地。
21You all understand how if you have a crystal prism and pass a beam of sunlight by means of it, you receive a spectrum, which seems like a continual band of rainbow shades.