卡地亞以璀璨鑽石讚頌動人真愛。卡地亞標誌性作品源於精湛工藝與創意巧思的精彩邂逅。每款作品均高貴非凡,顆顆鑽石皆綻放獨特光芒。
A common misunderstanding is usually that diamonds form from highly compressed coal. Coal is formed from buried prehistoric crops, and many diamonds that were dated are significantly older than the very first land plants.
碳有數种已知的同素异形体:不定形碳 ,碳奈米泡沫 ,金刚石,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。在热力学上,金刚石的稳定性低于石墨,可自发转变为石墨,但常温常压下这一转变的速度很慢,可以忽略不计,因此钻石得以稳定存在。自然界形成的金刚石一般形成于地球内部高温高压的环境,后来被火山喷发等地殼構造運動带到地表,因此许多金刚石发现在火山附近。现代工业可在高温高压下生产金刚石,称为「合成金刚石」。
*優惠只適用於首次網店購物並消費滿指定金額,不可與折扣優惠、已折扣的指定產品、滿額禮遇或其他優惠同時使用,並受有關條件及細則約束。每個帳戶只可享用一次。 可持續性的環保網購包裝
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这种在基质中的钻石原石晶体的略微畸形八面体形状是该矿物的典型特征。它有光泽的表面也表明这种晶体来自原生矿床。
The hardest all-natural diamonds mainly originate in the Copeton and Bingara fields located in The brand new England place in New South Wales, Australia. These diamonds are commonly smaller, great to semiperfect octahedra, and so are utilised 求婚鑽戒 to polish other diamonds. Their hardness is related to the crystal growth variety, that's solitary-stage crystal growth.
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Diamonds are The natural way lipophilic and hydrophobic, which implies the diamonds' floor can't be wet by water, but is usually conveniently soaked and caught by oil. This home can be used to extract diamonds employing oil when producing synthetic diamonds.
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钻石产区图 傳統釐定鑽石價值高低的標準是「4C」制度,即克拉、色澤、淨度、和切割。