If you like the color, clarity, and size of a stone but are less than excited about the cut, consider getting a good gemcutter to do some minor recutting to make a more attractive and unusual gem. Never buy stones encased in plastic . You must be able to examine a stone under magnification and to test its refractive index, specific gravity, and other characteristics so that you have a positive identification of the material. Find a good gemologist whom you can trust to advise you about purchases. Learn as much as possible about gemology.
Ignorance is very expensive.
Be patient . Top quality stones at reasonable prices are difficult to find, as are willing buyers of stones you wish to sell. Take advantage of good opportunities . Many gemstones do not have steady supplies and appear in the marketplace only sporadically. If you intend to use your gems in jewelry, be sure the jewelry is wellmade and designed to protect the stones and care properly for it, and be sure your jeweler is knowledgeable about the stones to be used.