Question

explain diamond and its properties and occurence?

Answer 1

Diamond is an crystral that is an allotrope of carbon..
it is the hardest substance in the world...
This the strongest and hardest allotrope of the carbon...
Diamond is occurred in the mines ...means it is a mineral obtain from the earths crust....
Diamond is poisonous and is a structural isomer....
It is usually used in ivory ,jewellery and cutting of amorphous solids like glass....

Answer 2

Diamond is an allotrope (different form) of carbon.The word diamond comes from the Greek word meaning unbreakable.The carbon atoms in diamonds are arranged in a strong, tetrahedral structure.Diamond is the hardest natural material known and is often used for industrial cutting and polishing tools.Diamond has a hardness of 10 on Mohs scale of mineral hardness, with 1 being the softest (talc) and 10 being the hardest.Diamond is the best known thermal conductor (heat transfer) among naturally occurring substances.Under the normal pressures and temperatures, we experience on the Earth’s surface, diamonds are actually thermodynamically unstable, slowly transforming into graphite. Yes, you read that correctly, diamonds are indeed turning into graphite, but thankfully for all those diamond owners out there, it’s a process that is far too slow for humans to notice.Most of the Earth’s natural diamond deposits are found in Africa.Around 26,000 kilograms (57,000 lb) of diamonds are mined around the world every year. They are worth billions of dollars to the powerful companies that control their production.Diamonds have often been a source of conflict and controversy, the term blood diamond refers to a diamond mined in an unstable area and sold to finance a war. This issue was brought to public attention in the 2006 movie named Blood Diamond (starring Leonardo DiCaprio and Jennifer Connelly).Diamond is the world’s most popular and sought-after gemstone. They are frequently worn as part of jewelry such as rings and necklaces. As well as their rarity, they are also well suited to jewelry because they polish well and can only be scratched by other diamonds.Diamonds are cut with considerable precision to optimize the luster and attention gathering shine of each specific diamond.Diamonds are valued according to their cut, color, carat, and clarity.Over the years there have been many famous (and very expensive) diamonds. The following are four well-known examples:The Koh-i-Noor diamond was found in India and once thought of as the largest diamond in the world. It is now part of the British Crown Jewels in the Tower of London.The 45.52 carat Hope Diamond appears blue because of boron in its crystal structure and is famous for supposedly being cursed.Discovered in the Kimberley Mine in South Africa, the Tiffany Yellow Diamond weighed an amazing 287.42 carats (57.484 g) when discovered. It was later sold to a New York jeweler named Charles Tiffany who had it cut into a cushion shape of 128.54 carats (25.708 g) with 90 facets to show off its beauty.After being originally found by a slave in an Indian mine, the now 140.64 carats (28.1 g) Regent Diamond has been through an epic history including an English sea merchant and French royalty. It is now on display at the Louvre, where it has been on display since 1887.Naturally occurring diamonds are formed over billions of years under intense pressure and heat. They are often brought to the Earth’s surface by deep volcanic eruptions.The technology for synthetic diamonds was researched in the 1940’s and the first synthetically created diamond was produced in the 1950’s.There are a number of techniques for producing synthetic diamonds, these include high-pressure high-temperature synthesis, chemical vapor deposition and detonation synthesis (literally blowing up carbon with explosives to create extremely small diamond grains).The synthesized material known as cubic zirconia is a crystalline form of zirconium dioxide (ZrO2). It is at times in competition with diamond because as well as being hard, optically flawless and colorless, it is also durable and cheap.

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