Diamond is the ultimate gemstone, having few weaknesses and much strength. It is the hardest substance found in nature. Diamond is four times harder than the next hardest natural mineral. Diamond has a broad color range, high refraction, high dispersion or fire, very low reactivity to chemicals, rarity, and of course, extreme hardness and durability. Diamonds are specifically renowned as a material with superlative physical qualities they make excellent abrasives because only by other diamonds scratch them. Borazon, ultra hard fullerene, or aggregated diamond nimrods, which also means they hold a polish extremely well and retain their luster. Diamond is the hardest natural material known to man - its hardness set to 10 scale of mineral hardness and having an absolute hardness value of between 90, 167, and 231 gaga rascals in various tests. Diamond is an allotrope of carbon. It is the hardest known natural material and the third-hardest known material after ultra hard fullerene. Its hardness and high dispersion of light make it useful for industrial applications and jewelry. Diamond's hardness since antiquity, and is the source of its name. However, aggregated diamond nimrods, an allotrope of carbon first synthesized in 2005, are even harder than diamond. The hardness of diamonds contributes to its suitability as a gemstone. Diamonds maintains its polish extremely well, keeping its luster over long periods. Unlike many other gems, it is well-suited to daily wear because of its resistance to scratching—perhaps contributing to its popularity as the preferred gem in an engagement ring or wedding ring, which are often worn every day. Industrial use of diamonds has historically been associated with their hardness; this property makes diamond the ideal material for cutting and grinding tools. The diamond is the birthstone for people born in the month of April, and is used as the symbol of a sixty-year anniversary, such as a Diamond Jubilee.

Celebrity

A celebrity is a widely-recognized or famous person who commands a high degree of public and media attention. The word stems from the Latin verb "celebrere" but they may not become a celebrity unless public and mass media interest is piqued. There are degrees of celebrity status which vary based on an individual's region or field of notoriety. While someone might be a celebrity to some people, to others they may be completely unknown. A global celebrity on the other hand is someone who is known by most people or is a mainstream celebrity. Such celebrities are also known as either a household name or superstar. For example, Virgin Director Richard Branson was famous as a CEO, but he did not become a global celebrity until he attempted to circumnavigate the globe in a hot air balloon and generate publicity for himself. Another high profile categorisation of celebrity status is the A-list, based on the marketability of celebrities. Generally speaking, a celebrity is someone who seeks media attention and most frequently have extroverted personalities. The desire to be famous is implied by some to be a part of western culture and more specifically the American Dream as a measure of success. Celebrities that shy away from the public eye or keep a very seperate private life are called a reluctant celebrity. A notable example is Kurt Cobain. On the oher end of the spectrum, those that seek out publicity for themselves are often called a media tart whereas those that use their private life as a vehicle for enhanced celebrity status, sometimes desperately, are referred to as a media whore. Examples of this are fake or planned relationships, reality television appearances, celebrity nudity and in extreme cases, scandal or celebrity sex tape. There are a wide range of ways people can become celebrities, from their profession, appearances in the mass media, beauty or even by complete accident or infamy. Instent celebrity is the term that is used when someone becomes a celebrity in very short period of time. In some places, someone that somehow achieves a small amount of transient fame through hype or mass media, is stereotyped as a B-grade celebrity. Often the stereotype extends to someone that falls short of mainstream or persistent fame but seeks to extend or exploit it.