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Jewels Pokrewne kategorie VideoRun The Jewels - Legend Has It (Official Music Video From RTJ3 \u0026 Black Panther)
Wenner Media. Retrieved July 28, Acoustic Guitar. String Letter Publishing. Archived from the original on September 5, Retrieved November 1, Archived from the original on February 20, Archived from the original on August 31, Retrieved September 6, Archived from the original on January 13, CBS News.
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Download as PDF Printable version. Wikimedia Commons Wikiquote. San Diego Music Awards. Won . Best Female Pop Vocal Performance.
Best New Artist. Nominated . American Music Award. Billboard Music Award. Words related to jewel stone , ornament , trinket , bead , bauble , gem , gemstone , treasure , masterpiece , glass , rock , baguette , hardware , sparkler , bijou , nonesuch , prize , pearl , specialty , paragon.
Example sentences from the Web for jewel They joined forces to form the rap supergroup Run the Jewel s.
Bulstrode Whitelocke. Sons and Lovers David Herbert Lawrence. Die gleichfarbigen Steine verschwinden und die darüber liegenden Steine rutschen nach.
Wenn Sie es schaffen, eine Reihe von vier oder mehr Steinen zu bilden, erhalten Sie einen Energiestein: Dieser bringt Ihnen Extrapunkte, wenn Sie ihn mit anderen Spielsteinen kombinieren.
Wenn die Zeit abgelaufen ist, ist das Spiel vorbei. Täglich wartet auf Sie ein neues, spannendes Rätsel. Determining a "country of origin" is thus much more difficult than determining other aspects of a gem such as cut, clarity, etc.
Gem dealers are aware of the differences between gem laboratories and will make use of the discrepancies to obtain the best possible certificate.
A few gemstones are used as gems in the crystal or other forms in which they are found. Most, however, are cut and polished for usage as jewelry.
The two main classifications are stones cut as smooth, dome-shaped stones called cabochons , and stones which are cut with a faceting machine by polishing small flat windows called facets at regular intervals at exact angles.
Stones which are opaque or semi-opaque such as opal , turquoise , variscite , etc. These gems are designed to show the stone's color or surface properties as in opal and star sapphires.
Grinding wheels and polishing agents are used to grind, shape and polish the smooth dome shape of the stones. Gems that are transparent are normally faceted, a method that shows the optical properties of the stone's interior to its best advantage by maximizing reflected light which is perceived by the viewer as sparkle.
There are many commonly used shapes for faceted stones. The facets must be cut at the proper angles, which varies depending on the optical properties of the gem.
If the angles are too steep or too shallow, the light will pass through and not be reflected back toward the viewer.
The faceting machine is used to hold the stone onto a flat lap for cutting and polishing the flat facets. The color of any material is due to the nature of light itself.
Daylight, often called white light, is all of the colors of the spectrum combined. When light strikes a material, most of the light is absorbed while a smaller amount of a particular frequency or wavelength is reflected.
The part that is reflected reaches the eye as the perceived color. A ruby appears red because it absorbs all the other colors of white light while reflecting the red.
A material which is mostly the same can exhibit different colors. For example, ruby and sapphire have the same primary chemical composition both are corundum but exhibit different colors because of impurities.
Even the same named gemstone can occur in many different colors: sapphires show different shades of blue and pink and "fancy sapphires" exhibit a whole range of other colors from yellow to orange-pink, the latter called " padparadscha sapphire ".
This difference in color is based on the atomic structure of the stone. Although the different stones formally have the same chemical composition and structure, they are not exactly the same.
Every now and then an atom is replaced by a completely different atom, sometimes as few as one in a million atoms.
These so-called impurities are sufficient to absorb certain colors and leave the other colors unaffected.
For example, beryl , which is colorless in its pure mineral form, becomes emerald with chromium impurities. If manganese is added instead of chromium , beryl becomes pink morganite.
With iron, it becomes aquamarine. Some gemstone treatments make use of the fact that these impurities can be "manipulated", thus changing the color of the gem.
Gemstones are often treated to enhance the color or clarity of the stone. Depending on the type and extent of treatment, they can affect the value of the stone.
Some treatments are used widely because the resulting gem is stable, while others are not accepted most commonly because the gem color is unstable and may revert to the original tone.
Heat can either improve or spoil gemstone color or clarity. The heating process has been well known to gem miners and cutters for centuries, and in many stone types heating is a common practice.
Aquamarine is often heated to remove yellow tones, or to change green colors into the more desirable blue, or enhance its existing blue color to a deeper blue.
When jewelry containing diamonds is heated for repairs the diamond should be protected with boric acid ; otherwise, the diamond which is pure carbon could be burned on the surface or even burned completely up.
When jewelry containing sapphires or rubies is heated, those stones should not be coated with boracic acid which can etch the surface or any other substance.
They do not have to be protected from burning, like a diamond although the stones do need to be protected from heat stress fracture by immersing the part of the jewelry with stones in the water when metal parts are heated.
Virtually all blue topaz , both the lighter and the darker blue shades such as "London" blue, has been irradiated to change the color from white to blue.
Most greened quartz Oro Verde is also irradiated to achieve the yellow-green color.