金剛石是“鑽石”的礦物名稱,是世界上最堅硬的天然礦物。它在工業中用來製造各種可以切削、加工硬質合金的刀具。金剛石具有折光率大、色散强的特性,其寶石级原料经琢磨加工後是世界上最珍貴的寶石,被譽為“寶石之冠”。她是堅貞純潔和富貴的象征。金剛石是由碳元素組成的單一礦物,屬等軸晶系、均质體,比重為3.47——3.56,一般為3.52,折光率N=2.42,色散系數為0.044,絕大多數金剛石為不良導體,僅少數類型(Ⅱb)具半導體性。金剛石還具有親油疏水的特性,因此在選礦工藝中常採用油選法。金剛石常見的晶體形態為八面體及菱形十二面體,亦有四六面體和一些過渡型晶體及聚晶,常伴有其他礦物和液、氣態的包裹體,影響了金剛石的質量。從顏色來看,無色透明者為上乘品。大多數金剛 Diamond is the “diamond” mineral name and is the hardest natural mineral in the world. It is used in the industry to make all kinds of cutting and machining cemented carbide tools. Diamond has a large refractive index, dispersion of the characteristics of its gem-level raw materials after pondering processing is the world’s most precious gems, known as the “crown of gems.” She is a symbol of integrity and purity. Diamond is a single mineral composed of carbon elements, is an equiaxed crystal system, homogeneous body, the proportion of 3.47--3.56, generally 3.52, refractive index N = 2.42, dispersion coefficient of 0.044, the vast majority of diamonds as a poor conductor, Only a few types (IIb) are semiconducting. Diamond also has lipophilic and hydrophobic properties, so the process of dressing is often used in oil dressing method. Common diamond crystal morphology octahedron and rhombic dodecahedron, there are also some hexagonal and some transitional crystals and polycrystalline, often accompanied by other minerals and fluids, gaseous inclusions, affecting the quality of diamond. From the color point of view, colorless and transparent for superior products. Most King Kong