概览
58X HARDER
Diamonds are the hardest material on earth: 58 times harder than anything else in nature.
“Lucy” IN THE SKY
Fifty light years from earth, this star is a 10 billion-trillion-trillion carat diamond.
1 IN 1,000,000
The average yield in most diamond mines is 1 part diamond to 1 million parts host rock.
FACTS
Mineral: Diamond
Chemistry: C
Color: Colorless
Refractive Index: 2.42
Birefringence: None
Specific Gravity: 3.52 (+/-0.01)
Mohs Hardness: 10
处理
There are a number of processes used to alter the color, apparent clarity, or improve the durability of gems.
合成品
Any gem can be imitated—sometimes by manmade materials or by natural materials chosen by man to impersonate a particular gem.
仿品
Any gem can be imitated—sometimes by manmade materials or by natural materials chosen by man to impersonate a particular gem.
我们为何钟爱这种宝石
1
全球通用标准
美国宝石研究院 (GIA) 创立的 4C 标准被公认为是衡量钻石品质的全球通用标准。
2
碳
钻石是唯一一种由单一元素碳构成的宝石。
3
十亿年
大多数钻石形成于十亿多年前的地幔深处。
品质要素
精致的切工是人类对钻石之美所做的贡献。
净度
成色
切工
克拉重量
钻石品质要素：综合指南
研究
探索钻石历史和钻石分级的研究。
RECOMMENDED READING
Diamond Inclusions
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