碳有數種已知的同素異形體：不定形�?，碳奈米泡沫 ，金剛石，藍絲黛爾石 ，蠟�?，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」。
切割完的鑽石，往往只有原石的一半重量。為了在鑽石保留最多的重量，或者要避開原石上的雜質，有些鑽石切割時會犧牲完美的切割比例。
黃金、鑽石、白銀一直以來都是代表財富的尊貴稀有金屬，白銀體積最龐大，單價最低。鑽石體積最小，單價最高，一直以來都是財富尊貴的象徵。
雜形鑽石 梨形 馬眼�?橢圓�?雷地恩形 枕形 心形 公主方形 上丁方形 祖母綠形 求婚戒指
同級重量、顏色，而切割得宜的鑽石，顯得比切割差的鑽石更為燿燦。判斷切割是否優良，要看鑽石的各種比例，各面是否對稱，各種角度等等。有時鑽石的切割角度相差數度，便會造成截然不同的效果。
現代科技之下，有些鑽石的內含物是可以修補的。不過修補過的鑽石的價值會稍低。
在買鑽石前，得到建議及認識鑽石是非常重要，因為鑽石是很復雜的東西 客人首飾
人造鑽�?求婚戒指 求婚戒指 設計自己獨特戒指 website 設計自己獨特戒指
但這些費用都會隨著鑽石價格波動、價格等級設定、選擇購買的平台比如線上品牌、當地銀樓、個人珠寶工作坊、鑽飾品牌、國際珠寶品牌而有價格差異。
戒指戴法有哪些？如何正確展示戒指含義，同時襯托出自己的個性呢？不同戒指戴法，左右手的象徵意義相同嗎？不同手指應配戴哪種類型的戒指？看完本篇文章馬上揭曉！
分辨人工鑽石與天然鑽石，是珠寶鑑定中一項關鍵技術。隨著人工鑽石技術的進步，外觀與物理特性與天然鑽石幾乎無異，但兩者在形成過程與微觀結構上仍有差異。以下是簡要介紹與常見的辨別方式：
�? · �? · �? · �? · �? · �? · 鍍 �?失蠟法 �?鑄造 �?浸滲 · 氧化 · 雕版
延伸閱讀>>十大鑽戒款式推薦！「圓鑽、公主方、祖母綠型」等各式鑽石車工戒指特色整理
若看重收藏價值、自然稀有性與長期保值，天然鑽石仍具獨特地位�?購買前應視個人需求與用途（如求婚、投資、日常配戴）作出選擇，並確認鑽石來源與證書標註。
若以GIA用英文字母作為顏色標記為例，最高級為「D」，加上E、File都屬於無色等級，G、H、I、J屬於接近無色等級，K、L、M屬於微黃，N~R微淺黃，S~Z淺黃等級。挑選鑽戒時，鑽石顏色為「無色」或「接近無色」都是較受歡迎的選擇。http://www.drugoffice.gov.hk/gb/unigb/www.difeee.com/chi/
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