Posted: 27 Aug 2011 07:40 PM PDT
Stones or synthetic lab-created gemstones, as the name suggests, are made in a laboratory. Synthetic gems are not the rarity of the stones natural color and are less expensive than natural stones extracted. Due to the nature, synthetic gems can be made show subtle differences in shape and color to distinguish them from their natural counterparts. A synthetic gemstone is identical to a natural gemstone in almost every aspect. This includes the same basicCrystal structure, refractive index, density, chemical composition, colors and other characteristics.
Since the same gemological tests for the identification of natural and synthetic stone precious stones are used, sometimes it is also a gemologist on, not whether a stone is natural or synthetic, can be confused. These stones can be made of colorless, or through the use of metal oxides, in many colors, and may resemble natural stone from many, including theAmethyst, diamond, spinel, emerald, opal, and corundum (ruby and sapphire). Alexandrite.
Lapis lazuli, turquoise and coral from the French manufacturer, Gilson are made are similar to their natural counterparts, but are not true, the plastic, because their optical and physical properties are different from natural gemstones. Gilson Lapis, for example, is porous and has a specific gravity lower.
Process for the production of synthetic gems
Growth from melt:
* The Flame and FusionVerneuil process
Verneuil process for the production of jewels, a bar down with a "seed" inminerals and then melted again. Repeat this process again and again grows a large crystal at the end of a rod from ore zone. Ruby is then removed and polished.
* Pull or Czochralski technique
* Brigman-Stockbarger Technology
* Hydrothermal Method
Aquamarine and quartz crystals in a solution in an autoclave, where they controlled the temperature and pressure to create the raw material to be grown in the hottest part Lascas name. Crystals of seeds are in the coldest part of which the form of synthetic quartz glass Lascas redeposit. This processcan grow 30 to 60 days, and is also used for the amethyst, citrine and rock crystal.
* Melt Flux Method
* High temperature / pressure method:
* Skull melting process
Imitation stones can be made from any material such as glass, paste or crystal, ceramic, porcelain, acrylic and plastic. Ceramics are the most common food simulants and less expensive and are used as replacements for many popular types of gemstones such as turquoise, coral, jade, pearls. Imitation stones are to simulate a particular gemstone, but do not have the same chemical, physical and optical properties ofto distinguish natural gems such as synthetic gem and can therefore easily be synthetic and natural gemstones. Volcanic glass, a man-made substance, which are made of obsidian, volcanic ash, is a possible candidate for imitation aquamarine and light sapphire. Some examples of imitation stones are cubic zirconia, synthetic moissanite (Diamond) and yttrium-aluminum-garnet, diamond imitations. Since diamonds are so valuable and popular, the diamond market is huge and fraudMany additional simulants as cubic zirconia, GGG, YAG, strontium titanate, synthetic rutile and moissanite have emerged over the past 50 years. Other imitation stones of emerald doublet, Foil Glass (Opal), imitation lapis lazuli, Synthetic forsterite (tanzanite), synthetic forsterite (peridot).
Posted: 26 Aug 2011 07:01 PM PDT
Moissanite rings are becoming popular as a substitute for diamonds. It has almost the same appearance and quality as diamond rings. It 's almost impossible for someone, the difference between this band and diamond rings to tell. Because of the high technology and development in the production of these bands, you can, as an alternative to expensive diamonds. With the advanced development in manufacturing technology and design, precious stone, with whichsuch as a tape made and displayed in any type of design and style, similar to what should be done to the diamond.
Only experienced or trained eye can make the difference between a moissanite and diamond rings. It is a sort of rainbow lights that do not have diamonds. The other difference is that an expert could tell right away from moissanite rings, diamond and is one of the levels of hardness of the gem. Man-made gems are usually lesshard as diamond. This is why these stones are less preferred than diamonds for industrial use, such as cutting.
Moissanite rings are wearing the same feeling of wearing diamond rings because of the look and feel almost identical. Because of the lower price of this ring, you'll save a lot of money than if you buy a diamond ring. In these difficult times of economic uncertainty, every dollar you earn should be spent in good or alwaysa place for that matter, only very few people could afford to buy an expensive diamond ring. Many people were buying engagement rings and wedding bands prefer this way instead of the diamond for its price and still remember diamonds. This is a wise decision in relation to the recent economic situation.
Although expensive precious stones such as diamonds still considered a wise investment for the long term, because the value increases over time, few people couldin fact they do today. Moissanite rings could be the perfect choice, because they are convenient and has all the appearance and quality as diamond rings.
Do not measure the value of giving to the cost of moissanite rings, because it has its unique characteristics. Although it looks similar to diamonds, this band is different. It has a unique function of them and not to the diamond. Since the origin of these stones from outsidethis land, has the luster of the stars. And because the rings are a symbol of love, could this unique brilliance of moissanite rings overwhelming love you.
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