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The Emerald Gemstones is considered to be one of the most precious of all gemstones. Its a derivative of the mineral beryl a silicate of aluminum and beryllium and the metal chromium that leads to the typical bluishgreen colour that is so famous as the hue emerald green which is now a colour shade on its own merit. As most gemologists only know too well the perfect Emerald Stone is a very rare occurrence. An Emerald Gems is usually graded visually – its colour should be a typical hue of dark green that has yellow and blue as secondary colours and it should be pleasant and not warm to the touch. Its common for emeralds to be cracked so a good eye and a sensitive touch can detect if its flawless or not. Emeralds Gemstone may be treated with oil to enhance their transparency and excellence.
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