Übersetzung für 'gems' im kostenlosen Niederländisch-Deutsch Wörterbuch von LANGENSCHEIDT – mit Beispielen, Synonymen und Aussprache. Viele übersetzte Beispielsätze mit "gems" – Deutsch-Englisch Wörterbuch und Suchmaschine für Millionen von Deutsch-Übersetzungen. Viele übersetzte Beispielsätze mit "gems" – Deutsch-Englisch Wörterbuch und Suchmaschine für Millionen von Deutsch-Übersetzungen.
The Amuni have arrived! The Amuni Guest Race started today on beta! The Amuni chapter guide is now available! Read up to learn all you need to know about the Amuni chapter before it arrives!
Already available on Beta, and coming August 16th to live servers! Check out this article to make sure you're ready for the Marble tournament starting on Tuesday of this week!
This round will use Version 2 of the Adventure map. It has not yet been announced when the adventure will return for live worlds.
Click below for more details on prizes, stages, paths, and more! Check out this article to make sure you're ready for the Gems tournament starting on Tuesday of this week!
The Tale of the Wandering Moon. Click below to check out the details and spoilers. Find Woodelvenstock Guide Here! Find them here on our new site location, coming soon for all pages!
The sequential quests have also been added to beta, and are now available. Planning for your next Elvenar event?
Check out the tips and tricks for quest events, here! Do you know the 3 Keys to Space Optimization? Make the most of your space with these gems of knowledge you won't want to miss!
Late May Adventures. Early May Adventures. City Layout Space Optimization. Wonder Society KP Pool. Storyline Quests by Chapter.
Optional Cycle by Chapter. Mobile Only - Crash and the Undead. The Tale of Burukbrak and Gaelagil. Diamond value can change based on location, time, and on the evaluations of diamond vendors.
There are a number of laboratories which grade and provide reports on gemstones. Each laboratory has its own methodology to evaluate gemstones.
A stone can be called "pink" by one lab while another lab calls it "padparadscha". One lab can conclude a stone is untreated, while another lab might conclude that it is heat-treated.
Country of origin has sometimes been difficult to determine, due to the constant discovery of new source locations. 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 form in which they are found. Most however, are cut and polished for usage as jewelry.
The picture to the left is of a rural, commercial cutting operation in Thailand. This small factory cuts thousands of carats of sapphire annually.
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 which are transparent are normally faceted, a method which 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 actually 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: 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 improve 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 purer 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 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. Diamonds are irradiated to produce fancy-color diamonds which occur naturally, though rarely in gem quality.
Emeralds containing natural fissures are sometimes filled with wax or oil to disguise them. This wax or oil is also colored to make the emerald appear of better color as well as clarity.
Turquoise is also commonly treated in a similar manner. Fracture filling has been in use with different gemstones such as diamonds, emeralds and sapphires.
In "glass filled rubies" received publicity. Such treatments are fairly easy to detect. Synthetic gems are physically, optically and chemically identical to the natural stone, but are created in controlled conditions in a laboratory.
Examples of simulated or imitation stones include cubic zirconia , composed of zirconium oxide and simulated moissanite , which are both diamond simulants.
The imitations copy the look and color of the real stone but possess neither their chemical nor physical characteristics.
Moissanite actually has a higher refractive index than diamond and when presented beside an equivalently sized and cut diamond will have more "fire" than the diamond.
Synthetic, cultured or lab-created gemstones are not imitations. For example, diamonds , rubies , sapphires and emeralds have been manufactured in labs to possess identical chemical and physical characteristics to the naturally occurring variety.
Synthetic lab created corundum , including ruby and sapphire, is very common and costs much less than the natural stones. Smaller synthetic diamonds have been manufactured in large quantities as industrial abrasives , although larger gem-quality synthetic diamonds are becoming available in multiple carats.
Whether a gemstone is a natural stone or lab-created synthetic , the physical characteristics are the same. Lab-created stones tend to have a more vivid color to them, as impurities are not present in a lab and do not modify the clarity or color of the stone, unless added intentionally for a specific purpose.
From Wikipedia, the free encyclopedia. For other uses, see Gemstone disambiguation. For the James Bond character, see Hurricane Gold.
For other uses, see Gem disambiguation , Gems disambiguation , and Jewels disambiguation. This article or section may have been copied and pasted from another location, possibly in violation of Wikipedia's copyright policy.
Please review the source and remedy this by editing this article to remove any non-free copyrighted content and attributing free content correctly, or flagging the content for deletion.
Please be sure that the supposed source of the copyright violation is not itself a Wikipedia mirror.
This section does not cite any sources. Please help improve this section by adding citations to reliable sources.
Unsourced material may be challenged and removed.Stones which are opaque or semi-opaque such as opalturquoisevarisciteetc. A new feature is now available on Beta! The GIA system included a major innovation: This difference in color is based on the Beste Spielothek in Radelandsiedlung finden structure of the stone. Depending on the type and extent of treatment, they can affect the value of the stone. Gemstones are classified into different groupsspeciesreagenzkolben varieties. Based on event history, it could be the following Monday, or it could be besiktas olympiakos live stream week later. Make the most of your space with these direktbroker of casino schenefeld hamburg you won't want to miss! Every now and then an atom is replaced by a completely different atom, sometimes as few as one in a million atoms. Professor at Royal Academy of Arts in London Determining a "country of origin" is thus much more difficult than determining other aspects Beste Spielothek in Eggenwatt finden a gem such as cut, clarity, etc. Gems which are transparent are normally faceted, a method which shows the optical properties of the stone's interior Beste Spielothek in Rehhof finden its best advantage by maximizing reflected light which is hängeleuchte casino by the viewer as sparkle.