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Jewels and Gems is a children's book written with the aim of entertaining and inspiring children in the enchanting world of gems and precious stones. Welcome to Jewels Treasure Hunter - addictive match puzzle game. Jewels Treasure Hunter is a type of the classic match two, three or more jewels puzzle. Jewels and Gems: Magic Candy Jewels Very addictive and fun game. It is playing by profesionals players to improve their skills as reflex and speed. Pro players. Jewels and Gems. 9 Bewertungen. Nr. 17 von 30 Shopping in Candolim. Leider sind an den von Ihnen gewählten Daten keine Touren oder Aktivitäten verfügbar. Jewels And GEMS - Online Shop – Casanta so-ong, Lapu-Lapu City – Mit 5 bewertet, basierend auf 3 Bewertungen „real and authentic gold plus friendly.
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The game starts out friendly and your not forced to play one board for hours or days and then when you buy the first booster or whatever it begins to get more unruly.
That did not happen. I still have to watch innumerable game ads and that is also boring. What is the point?
If you want money from me give me incentive not punishment. Ads still blacking out so play is ended before you get the extra 5 moves.
That was not indicated in the remove ads I purchased. At level you cannot win. They have purposely forced me to use all of my resources.
In two days I have not been able to even get close to beating this board. Dear player, thank you very much for your detailed feedback. We have optimized the level difficulty in the latest version, please update to the latest version 2.
If the level still can't be completed, please contact email: lyzjgame We will improve it and will bring you a more satisfying game.
Requires iOS 9. Compatible with iPhone, iPad, and iPod touch. App Store Preview. Screenshots iPhone iPad. Dec 4, Version 2.
Ratings and Reviews See All. In-App Purchases See All. VIP Permanent. Size Category Games. Compatibility Requires iOS 9.
Price Free. In its rough crystalline form, a diamond will do none of these things; it requires proper fashioning and this is called "cut".
In gemstones that have color, including colored diamonds, the purity and beauty of that color is the primary determinant of quality.
Physical characteristics that make a colored stone valuable are color, clarity to a lesser extent emeralds will always have a number of inclusions , cut, unusual optical phenomena within the stone such as color zoning the uneven distribution of coloring within a gem and asteria star effects.
Ancient Greeks, for example, greatly valued asteria gemstones, which they regarded as powerful love charms , and Helen of Troy was known to have worn star- corundum.
Aside from the diamond , the ruby , sapphire , emerald , pearl not, strictly speaking, a gemstone , and opal  have also been considered [ by whom?
Up to the discoveries of bulk amethyst in Brazil in the 19th century, amethyst was considered a "precious stone" as well, going back to ancient Greece.
Even in the last century certain stones such as aquamarine , peridot and cat's eye cymophane have been popular and hence been regarded as precious.
Today the gemstone trade no longer makes such a distinction. Nevertheless, diamonds, rubies, sapphires, and emeralds still have a reputation that exceeds those of other gemstones.
Rare or unusual gemstones, generally understood to include those gemstones which occur so infrequently in gem quality that they are scarcely known except to connoisseurs, include andalusite , axinite , cassiterite , clinohumite and red beryl.
Gemstone pricing and value are governed by factors and characteristics in the quality of the stone. These characteristics include clarity, rarity, freedom from defects, beauty of the stone, as well as the demand for such stones.
There are different pricing influencers for both colored gemstones, and for diamonds. The pricing on colored stones is determined by market supply-and-demand, but diamonds are more intricate.
Proponents of energy medicine also value gemstones on the basis of alleged healing powers. 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 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 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 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 can 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 a laboratory.
Examples of simulated or imitation stones include cubic zirconia , composed of zirconium oxide, synthetic moissanite , and un-colored, synthetic corrundum or spinels ; all of which are diamond simulants.
The simulants imitate the look and color of the real stone, but possess neither their chemical nor physical characteristics. In general, all are less hard than diamond.
Moissanite actually has a higher refractive index than diamond, and when presented beside an equivalently sized and cut diamond will show more "fire".
Cultured, synthetic, or "lab-created" gemstones are not imitations: The bulk mineral and trace coloring elements are the same in both.
For example, diamonds , rubies , sapphires , and emeralds have been manufactured in labs that possess chemical and physical characteristics identical to the naturally occurring variety.
Synthetic lab created corrundum , including ruby and sapphire, is very common and costs much less than the natural stones.
Small 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 synthetic, the chemical, physical, and optical characteristics are the same: They are composed of the same mineral and are colored by the same trace materials, have the same hardness and density and strength , and show the same color spectrum , refractive index , and birefringence if any.
Lab-created stones tend to have a more vivid color, since impurities common in natural stones are not present in a synthetic stone.