Gems
Since ancient times, precious stones used as a valuable ornament. In fact, precious stones were also used as a symbol of wealth, power and majesty of the ancient civilization. Precious stones treated by the world community as valuable because it is the most hard rock this earth.
In the past, people never thought that the stone has flashes of light and beautiful. Light-precious stones can be divided and reflected to produce rainbow colors, which cause it sparkling. However flashes gems actually depends on how it is cut. Precious stones are often associated with things mystical. Traditional medical practitioners for example, save precious stones like orange, red, black and yellow for the purpose of trapping energy such as foreign. Based on scientific research physicist, has miles of atomic structure with a strong low-frequency, slowly and favored by negative elements. However precious stones of pink, purple, white, green and blue found to have a relatively strong atomic structure and have a high frequency sound and speed.
Significant difference between the original gem stone common beauty, durability, hardness, difficulty to get it, how precious stones and drift emit light, and other features that are not common in stone. Many precious stones are mineral crystals or stones in the earth's crust. Precious stones have a specific chemical composition and atomic structure which are clustered in certain forms. Chemical composition is thus formed color, physical, and features that distinguish between precious stones each other. Gemstone weight is measured in carat value where one carat is 0.2 grams (1 / 5 of 1 gram).
Deduction form and precious stones should be done by experts and for those skilled in the beautiful gems to show beauty and beauty. When making cuts, experts will be possible attempt to obtain maximum possible weight in carat gem that. Discounts on stone also take into account Hardness (force), dispersion (light fraction), birefringence (refraction of light), cleavage (the distance between two corners), flaw (the original features that are not perfect), and inclusion (in effect in miles) . In addition, the cut gemstones by type of consideration to whether the transparent, translucent (semi-transparent) or opaque (light can not penetrate). Cut in opaque ordinary stone cabochon. Special features on some stones such as asterism (star) and cathoyancy (cat's eye) require a cabochon cut round or oval shaped with smooth surfaces and done by experts. Deduction requires many brilliant facet (surface-insulated terms) is often used for precious stones that showed flashes and transparent to the maximum emission of light and color that attract. Discounts on stone also highlight the luster (dibiaskan and the amount of light transmitted). Most gems have a vitreous luster, also known as glass-like luster (flashes such as glass).
Precious stones need hard and resistant to chemical changes with the frequent application. Hardness (Hardness) and durability (durability) is key in determining the gems. Scale of 1 to 10 are used to determine the force gems known as the Mohs scale. Scale was created by Friedrich Mohs a mineralogy from
Although violence is an important factor in the evaluation of precious stones, one thing that is important also toughness (strength) of the precious stones. Diamond has a force 10 on the Mohs scale of mineral terkeras in the world but not so strong because there is actually a weak carbon bonds and can be broken if an impact is strong. Similarly, sapphire and ruby (value of 9 on Mohs scale), topaz (8), emerald (7.5 to 8), and several other gems can be broken if an impact is strong. In addition, there are also gems that hard but can not withstand the exposure to chemical or ultrasonic waves or ultraviolet light such as kunzite, tanzanite, and hiddenite. Strength (toughness) to the special features on some gems. For example jadeite that has force only on the value scale of hardness 7 but has the structure consisting of fiber-fiber bonded strong among each other to make it a gem that is strong enough.
Precious stones such as sapphire and ruby (corrundum group) can emit light like a star on the stone. This is due to fiber (fiber) is available in these gems. Star light flashes with 6 blades (six-rays) have 3 sets of parallel fiber. Sometimes, cutting precious stones can be cut to 12 blades emit flashes of light.
Value determined from the gem type, color, clarity (clarity), size (in carat weight), difficulty to obtain, popularity, and beauty. Diamond assessed using 4C; clarity, carrats, color, cut. If all those features have on the diamond, at market value would rise up. Diamond also be less expensive because of popularity while Alexandrite and emerald become expensive because of difficulty acquired. In fact, there are also gems to be so expensive is because in the collection of classes and the famous rich spinel as the crown of Queen Elizabeth or the emerald and ruby in the crown of Emperor of India (both now in storage in museums).
Apart from precious stones, jewelry man also made of plastic, wood, glass and fiber. Through sophisticated technology, it resulted in a variety of beautiful gems processed through human hands. Whether natural or artificial, it is still attractive as an ornament. This is the greatness of God and natural wonders of His creation is still largely untouched by humans.
edited by:
Farah
