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Each diamond emerges as a stone unique in weight, purity and color. Diamonds can also be manufactured in a lab. ... Diamond Price Range. 0.50 Carat. $1,100 – $7,690. $500 – $3,485. 0.75 Carat ...
A diamond is a gemstone formed by cutting a raw diamond, which is a crystalline form of carbon with high hardness and dispersion. Learn about the history of diamond mining, cutting, and trade, as well as the characteristics and uses of diamonds as gems and industrial materials.
Diamond is a solid form of carbon with its atoms arranged in a crystal structure called diamond cubic. It has the highest hardness, thermal conductivity, and optical dispersion of any natural material, and can be colored by impurities or defects.
Learn about the hardness, crystal structure, refractive index and other characteristics of diamond, the allotrope of carbon with a cubic lattice. Diamond has a high refractive index (2.417) and moderate dispersion (0.044) that give it brilliance.
Cullinan Diamond is the largest gem-quality rough diamond ever found, weighing 3,106 carats, discovered in South Africa in 1905. It was presented to King Edward VII and cut into two major diamonds, the Great Star of Africa and the Second Star of Africa, and seven minor diamonds.
The Hope Diamond is a 45.52 carats blue diamond that has been famed for its great size since the 18th century. It was donated in 1958 by the American jeweler Harry Winston to the Smithsonian Institution, where it remains on permanent exhibition.