Emeralds

Emeralds, like all colored gemstones, are graded using four basic parameters – the four Cs of Gemstones: Color, Cut, Clarity and Crystal. The last C, crystal is a synonym that begins with C for transparency or what gemologists call diaphaneity. Before the 20th century, jewelers used the term water as in a gem of the finest water to express the combination of two qualities, color and crystal. Normally, in the grading of colored gemstones, color is by far the most important criterion. However, in the grading of emerald, crystal considered a close second. Both are necessary conditions. A fine emerald must possess not only a pure verdant green hue as described below, but also a high degree of transparency considered a top gem. In the 1960s, the American jewelry industry changed the definition of emerald to include the green vanadium-bearing beryl as emerald. As a result, vanadium emeralds purchased as emeralds in the United States recognized as such in the UK and Europe. In America, the distinction between traditional emeralds and the new vanadium kind reflected in the use of terms such as Colombian Emerald. Scientifically speaking, color divided into three components: hue, saturation and tone. Yellow and blue, the hues found adjacent to green on the spectral color wheel, are the normal secondary hues found in emerald. Emeralds occur in hues ranging from yellow-green to blue-green. The primary hue must be green. Only gems that are medium to dark in tone considered emerald. Light-toned gems known by the species name, green beryl. In addition, the hue must be bright (vivid). Gray is the normal saturation modifier or mask found in emerald. A grayish green hue is a dull green. Emerald tends to have numerous inclusions and surface breaking fissures. Emerald graded by eye. Thus, if an emerald has no visible inclusions to the eye it considered flawless. Stones that lack surface breaking fissures are extremely rare and therefore almost all emeralds are treated, oiled, to enhance the apparent clarity. Eye-clean stones of a vivid primary green hue with no more than 15% of any secondary hue or combination of a medium-dark tone command the highest prices.6 This relative crystal non-uniformity makes emeralds more likely than other gemstones to be cut into cabochons, rather than faceted shapes.

Auditions

The process of auditioning for a role in a performance, as in a demonstration of acting, dancing, singing ability. Auditions are used in the casting process to demonstrate the level and range of a performer's talent, and functions as a job interview for the performing arts. For actors, the audition piece is typically not from the show being considered. Some auditions involve cold reading, or performing a script that the actor is not familiar with. Likewise, musicians may be asked to sight-read music at various levels of difficulty. This is similar to many dance auditions, rather than showcasing prepared work. To learn more information about the audition process, go to auditions. An audition is a sample performance by an actor, singer, musician, dancer or other performing artist.

For actors, the audition piece is typically not from the show being considered; an actor wishing to be cast in Hamlet would not likely do a monologue from that play. However, most performers do have a range of audition pieces and select something appropriate; an actor auditioning for Hamlet would have a dramatic Shakespearean monologue ready, and not perform a monologue from an Oscar Wilde comedy, or a contemporary playwright, such as Tom Stoppard. The audition process is a big part of any actor's life - it should be taken seriously. To learn more about auditions go to auditions.

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Audition

Auditions are held by producers and casting directors. They choose whom to cast after an audition has been held. Always bring a headshot and resume to an audition. Auditioning is a very important part of any actor's career; be sure you're well informed. Go to audition audition and find out what you need to know to ace any audition. An audition is the process of trying out for a role in a performance, as in a demonstration of acting, dancing or singing ability.

Casting means selecting the actors, dancers, singers or other talent for a live or recorded performance. It typically involves auditions before a panel that may include the production's producer, director, and choreographer. In the early stages of casting auditions, the performers may present prepared audition pieces such as monologues or songs. Major productions that need to fill many roles may use a casting director and a specialized staff. Casting calls of celebrity performers may follow strictly personal channels; e.g. direct contact with the director.