Indicators on 求婚鑽戒 You Should Know
Indicators on 求婚鑽戒 You Should Know
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或許有人會想：「我和伴侶是不是一定要買對戒？」但對戒不僅適合即將步入婚姻的伴侶，也非常適合那些在重要時刻希望象徵彼此承諾的人們。無論是訂婚、周年慶或是其他特別的日子，對戒都是紀念彼此關係的完美選擇。對戒不僅僅限於婚姻，更適合作為兩人關係的見證。
The acute hardness of diamond in specific orientations makes it beneficial in resources science, as During this pyramidal diamond embedded during the Performing surface area of the Vickers hardness tester. Diamond is the hardest materials about the qualitative Mohs scale. To perform the quantitative Vickers hardness examination, samples of resources are struck by using a pyramid of standardized dimensions using a identified power – a diamond crystal is utilized for the pyramid to permit a wide range of supplies for being tested.
Screening devices according to diamond type detection can be employed for making a distinction in between diamonds which are certainly normal and diamonds that happen to be possibly artificial.
In 1772, the French scientist Antoine Lavoisier utilised a lens to concentrate the rays in the Sunshine with a diamond in an environment of oxygen, and confirmed that the only real product from the combustion was carbon dioxide, proving that diamond is made up of carbon.
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N. W. Ayer 結婚對戒 & Son, the advertising organization retained by De Beers within the mid-twentieth century, succeeded in reviving the American diamond current market along with the company made new markets in nations around the world in which no diamond custom had existed right before. N. W. Ayer's promoting integrated product or service placement, advertising and marketing focused on the diamond solution itself as opposed to the De Beers manufacturer, and associations with famous people and royalty. Without having advertising and marketing the De Beers brand name, De Beers was marketing its competition' diamond merchandise too,[116] but this was not a priority as De Beers dominated the diamond industry through the 20th century. De Beers' market place share dipped temporarily to 2nd location in the worldwide marketplace underneath Alrosa inside the aftermath of the worldwide economic disaster of 2008, all the way down to less than 29% with regard to carats mined, rather than marketed.
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一般的方法是把鑽石按偏黃的程度分為不同的等級，把樣品與已知色級的比色石對比確定，以D級最高，Z最低。
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