GIA 4Cs - 钻石 4C 标准与宝石信息
Time 2020-11-12 03:04:06Web Name: GIA 4Cs - 钻石 4C 标准与宝石信息
WebSite: http://4cs.gia.edu
ID:113017
Keywords:
钻石,标准,信息,Description:
博茨瓦纳目前是世界第二大钻石产地。很多世界上最大的钻石都产自这里。钻石产业帮助博茨瓦纳建设基础设施、促进女性事业发展及抗击艾滋病。了解钻石对博茨瓦纳的其他帮助。选购优质钻石始于 3C 标准，而非 4C。想不到吧？决定钻石品质的是切工、净度和颜色，而非克拉重量。毕竟，尺寸不影响品质。了解如何根据 3C 标准、荧光和形状，购买一颗精美的钻石。 结婚戒指的起源非常神奇。交换戒指的传统可以追溯到 3000 年前，而第一枚结婚钻戒的记录却是在一位遗孀的遗嘱中发现的，这位遗孀于 1417 年去世。为什么戒指（尤其是钻戒）是浪漫的终极象征？ 3X 钻石是一个行业术语，指在 GIA 鉴定证书中，切工、磨光和对称性等级均为“极优”的钻石。GIA 并不使用这一术语，但许多珠宝商会用到。3X 等级重要吗？您应该花更多钱购买 3X 钻石吗？ 现代钻石行业起源于南非钻石。两位名叫 Erasmus Jacobs（伊拉斯谟·雅各布斯） Cecil Rhodes（塞西尔·罗兹）的青少年促成了这一切。让我们看看 Jacobs（雅各布斯）是如何发现首颗南非钻石的，Rhodes（罗兹）又是如何建立起一个钻石帝国的。<<< Thank you for your visit >>>
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