diamond name is derived from the ancient Greek "unbreakable". Diamond is a metastable allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Most natural diamonds are formed at high temperature and pressure at depths of 140 to 190 kilometers (87 to 118 mi) in the Earth's mantle.
Diamonds can also be produced synthetically in a HPHT method which approximately simulates the conditions in the Earth's mantle.
Diamond is the hardest known natural material.
Mined rough diamonds are converted into gems through a multi-step process called "cutting". Diamonds are extremely hard, but also brittle and can be split up by a single blow. Therefore, diamond cutting is traditionally considered as a delicate procedure requiring skills, scientific knowledge, tools and experience. Its final goal is to produce a faceted jewel where the specific angles between the facets would optimize the diamond luster, that is dispersion of white light, whereas the number and area of facets would determine the weight of the final product.
Each of the four C's (Carat Weight, Cut, Color, Clarity) give certificate of Authenticity.
The 35.56-carat blue diamond dates back to the 17th century, when King Philip IV of Spain selected the jewel to be part of his daughter's dowry; is the costliest diamond.
Cut and polished diamond is set in finger ring, earings, necklace, bracelet...
...my wish is"sparkle like a diamond,become precious as a diamond"...
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