alexandrite gems
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Some of the treatment procedures are centuries old, while others are relatively new. Gemstones are treated differently to improve their appearance. Some of these procedures are centuries old, while others are relatively new. Moreover, by cutting or polishing gemstone could be fabulous nice colors and brightness. Treatment or enhancement of gemstones, any process to do better gem jewelry natural color, clarity before cutting and polishing. Please understand treatment and enhancement that has nothing to do with man created gems or synthetic gemstones. The treatment and improvement of the gemstone is very common way to improve the appearance of precious stones. Some improvements in treatment and improvement of nature are permanent and can not be detected. The treatment and process improvement looks so to what happens in nature, can not always know if they have been treated after mining or earlier. Microscopic examination reveals at times, an inclusion that burst during the heat treatment, but there is no way of knowing exactly that the heat treatment was carried out before or after mining. There are many techniques treatment or enhanced gems (More information on knowledge http://www.facedgem.com/gemstone-knowledge/gemstone-treatment.htm). In brief explanations of the important techniques is the following.
Oiled treatment method has been used more so that hundreds of years, most Emerald sought its beautiful green color and clarity. Similarly, other colored stones such as alexandrite and rubies are treated in this way makes the inclusions less surface. So we can conclude that the oils are used in colored gemstones to improve appearance. This treatment reduces fractures and provide better clarity. Heat treatment is the most common and better known. This is so common with corundum, ruby and sapphire, it is recommended that jewelers report clients that are "probably heat treated. Heating may cause the color of the stone to darken, brighten, or even completely changed, and may also improve the clarity of the gems. Heating of most types of gemstones is a standard treatment procedure. Knowledge Heating passed through generations. Heating methods vary from simple burning at very low technical method of temperature regulation (more on the knowledge http://www.facedgem.com/gemstone-knowledge/gemstone-treatment.htm). Diffusion is a method of improvement, commonly used on corundum, fortified with iron and titanium in the heating of the gemstone, sometime called surface diffusion. Diffusion layer created by adding elements. This coating layer is described as color. Improvement of radiation or irradiation means beating the material with subatomic particles. In some cases, irradiation is followed by heating to produce a good or the new color of the gem – such as topaz. So today irradiation technique applied and has created many nuances that are not found in natural topaz. Just as tourmaline, irradiation may become dark pink stone red. Diamonds in the irradiation and heating can become brown, blue, yellow, pink and green.
Pam & Eric at INTA Gems & Diamonds – Los Angeles Jewelry District
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14.70CTS. AMAZING ALEXANDRITE COLOR CHANGE TRILLION GEM
$0.99 |
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0.30 CT NATURAL ALEXANDRITE CATS EYE GEMS (SF60/27)
$5.99 |
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0.15 CT NATURAL ALEXANDRITE CATS EYE GEMS (SF60/26)
$3.99 |
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1.10ct BRAZIL NATURAL ALEXANDRITE CHRYSOBERYL GEM VVS
$1,100.00 |
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0.25 CTS NATURAL ALEXANDRITE CAT EYE ROUND GEM(BG40/93)
$5.99 |
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0.25 CTS NATURAL ALEXANDRITE CAT EYE ROUND GEM(BG40/82)
$5.99 |
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0.30 CTS NATURAL ALEXANDRITE CAT EYE OVAL GEM(BG40/136)
$6.99 |
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20.80Cts.HUGE NICE RUSSIAN CZOCHRALSKI ALEXANDRITE GEM
$0.91 |
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17.95Cts.HUGE NICE RUSSIAN CZOCHRALSKI ALEXANDRITE GEM
$0.91 |
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20.95Cts.HUGE NICE RUSSIAN CZOCHRALSKI ALEXANDRITE GEM
$0.91 |
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30.35ct Cholaraski Color Change ALEXANDRITE Loose Gem
$9.99 |
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2.45 Ct.RARE NATURAL CROWN RUSSIAN ALEXANDRITE OVAL GEM
$19.99 |
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28.70 CT. AMAZING RUSSIAN CZOCHRALSKI ALEXANDRITE GEM
$7.99 |
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1.20ct. RARE NATURAL CROWN RUSSIAN ALEXANDRITE OVAL GEM
$9.99 |
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25.35 CT. AMAZING RUSSIAN CZOCHRALSKI ALEXANDRITE GEM
$7.99 |
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1.35 Ct.RARE NATURAL CROWN RUSSIAN ALEXANDRITE OVAL GEM
$9.99 |
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2.05 Ct.RARE NATURAL CROWN RUSSIAN ALEXANDRITE PEAR GEM
$15.99 |
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1.0ct. RARE NATURAL GREEN ALEXANDRITE OVAL RUSSIAN GEM
$9.99 |
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16.70ct.Russian Change Color Alexandrite Oval Lab Gem
$2.99 |
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1.40 Ct.RARE NATURAL CROWN RUSSIAN ALEXANDRITE OVAL GEM
$9.99 |
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1.80 Ct.RARE NATURAL CROWN RUSSIAN ALEXANDRITE OVAL GEM
$9.99 |
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1.80 Ct.RARE NATURAL CROWN RUSSIAN ALEXANDRITE OVAL GEM
$15.99 |
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22.65ct.RUSSIAN CZOCHRALSKI ALEXANDRITE OVAL GEM
$4.56 |
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22.35ct.RUSSIAN CZOCHRALSKI ALEXANDRITE CUSHION GEM
$4.56 |
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26.05ct. AAA COLOR CHANGE CZOCHRALSKI ALEXANDRITE GEM
$8.01 |
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Cubic Zirconia Flat Briolette 6 x 12mm Beads - Alexandrite (x2)
$2.25 Fiery Cubic Zirconia Pendant Beads Faceted Briolettes 6mm X 12mmAlexandrite 2 BeadsThese beautiful beautiful beads beat Austrian crystal hands down for brilliance and qualityIt's hard to capture the fire of these man-made stones in photos - suffice it to say that you will be very pleased with these.Perfect for necklaces and chandelier earrings.Pastel Alexandrite purple color.Measurements: appr... |
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Alexandrite Oval 14x10
Excellent Cut - Lab Created simulated Alexandrite (Lab Corundum) . Oval 14x10 about 6.36 Cts. The best color change from Pink/Purple to Blue/Green . -Type: Gem -Material: Gem -Gem: Alexandrite -SKU: alex116... |
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Alexandrite Round Checkerboard 10mm
Nicely Cut 10mm Checkerboard Cut - Lab Created simulated Alexandrite (Lab Corundum) . Excellent color change from Pink/Purple to Blue/Green. About 3.71 Cts. -Type: Gem -Material: Gem -Gem: Alexandrite -SKU: alex119... |
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Glass Gem - Alexandrite
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Glass Gem - Alexandrite
$9.60 Give her a gift that has clbuttocks and style! Introducing Top Cat s all-new Glbuttocks Gem Alexandrite. This elegant glbuttocks dildo has the shape and size that she will enjoy. The Alexandrite has the unique shape of a penis for smooth insertion, and has studs for add... |
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Designer Birthstone Jewel - June / Alexandrite
$14.99 ... |
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Gems of Divine Mysteries
$3.99 Gems of Divine Mysteries. please visit www.valdebooks.com for a full list of titles... |
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Gleanings from the Writings of Baha'u'llah
$3.99 Gleanings from the Writing of Bahá'u'lláh", first published in 1939, is a thorough and inclusive compilation of many of the essential teachings of Bahá'u'lláh (1817-1892). It has become a part of most Bahá'ís personal libraries. It contains a complete index and glossary, so that most aspects of His teachings can be looked up, such as 'life after death', Bahá'u'lláh's station and that of Mu... |
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Dusty Diamonds Cut and Polished A Tale of City Arab Life and Adventure
$3.99 Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.... |
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