The Single Best Strategy To Use For 鑽戒
The Single Best Strategy To Use For 鑽戒
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作為卡地亞一個多世紀以來的經典佳作，歷久常新的簡約設計贏得一眾女士的歡心。標誌性的四爪鑲崁不但令鑽石的輪廓更立體，還突顯其璀璨奪目的光芒，象徵相伴終生的愛之諾言。
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The double-ring ceremony describes the Trade of wedding rings by and for both of those spouses. In a number of European nations such as the Nordic nations, it truly is prevalent to Trade simple engagement rings of the same type for the two sexes, and commonly, yet another, more treasured, and bejeweled wedding ring is supplied towards the bride. From the nuptials, the groom's ring becomes a wedding ring also, and can be bestowed anew from the bride like a Section of the wedding ceremony. The engagement is usually a make any difference of agreement concerning the two, and the wedding rings are selected with each other. Each engagement and wedding rings are worn within the still left hand in Sweden and Finland, the bride obtaining both of those rings alongside one another. Occasionally, the groom gets a different wedding ring. In Germany and Austria, both equally get-togethers use engagement rings worn within the still left hand.[6] In the nuptials, a wedding ring is placed on the proper hand, as in numerous east European nations, which includes Bulgaria, Poland, and Russia.
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Diamonds Slash glass, but this doesn't positively recognize a diamond simply because other supplies, including quartz, also lie earlier mentioned glass over the Mohs scale and can also Slash it. Diamonds can scratch other diamonds, but this can result in damage to one particular or each stones. Hardness tests are occasionally used in functional gemology as a consequence of their potentially harmful nature.[31] The acute hardness and significant price of diamond ensures that gems are generally polished slowly, using painstaking traditional strategies and greater attention to detail than is the case with most other gemstones;[32] these tend to result in extremely flat, very polished facets with exceptionally sharp aspect edges.
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They can be all derived from magma forms that erupt promptly from small amounts of melt, are rich in volatiles and magnesium oxide, and are less oxidizing than more typical mantle melts like basalt. These qualities allow the melts to carry diamonds for the surface area ahead of they dissolve.[68]
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合成鑽石試圖利用複製高溫高壓的環境施加於晶種上，人工製造鑽石的生長現象。
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碳有數種已知的同素異形體：不定形碳 ，碳奈米泡沫 ，金剛石，藍絲黛爾石 ，蠟石 ，聚合鑽石奈米棒 ，環碳石墨烯、石墨和富勒烯。在熱力學上，金剛石的穩定性低於石墨，可自發轉變為石墨，但常溫常壓下這一轉變的速度很慢，可以忽略不計，因此鑽石得以穩定存在。自然界形成的金剛石一般形成於地球內部高溫高壓的環境，後來被火山噴發等地殼構造運動帶到地表，因此許多金剛石發現在火山附近。現代工業可在高溫高壓下生產金剛石，稱為「合成金剛石」。
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