10. The Allnatt Diamond ($ 3 Million) The Allnatt Diamond is a diamond the size of 101. 29 carat (20. 258 g) with a cushion cut, rated in color as Fancy Vivid Yellow by the Gemological Institute of America. The diamond is named after one of the holders, Major Alfred Ernest Allnatt, a soldier, sportsman, … Continue reading Top 10 Most Expensive DIAMONDS in the World.
An experienced professional uses a 10x power magnification in standardized light to examine the clarity grade. FL – Flawless – Loupe clean: no external or internal features. IF – Internally Flawless - no inclusions and only minor external features, with the exception of small external growth lines. VVS1, VVS2 – Very Very Slight Inclusions: very … Continue reading Diamond Clarity Grades.
Africa - South Africa is the main producer of diamonds in Africa. Namibia is another country that produces diamonds Africa. Namibia is not a big producer as far as quantity is concerned, but its diamonds are of a high quality, 95% of the diamonds mined in Namibia's Skeleton Coast are gem quality diamonds. Angola - as … Continue reading Producing & Cutting Centers of DIAMONDS.
The diamond is a natural mineral composed mostly of carbon (99.95%). The diamond's crystal structure belongs to the cubic system. The diamond is usually an octahedron and less often has the shape of a cube or a dodecahedron. The following conditions are needed to transform carbon into a diamond crystal: a pressure of 100,000 bars … Continue reading Process of Formation for DIAMONDS.