This is the talk page for discussing improvements to the Viking Age article. This is not a forum for general discussion of the article's subject. Put new text under old text. Click here to start a new topic. Please sign and date your posts by typing four tildes (~~~~).
In addition, it must be hard and durable. Its value increases if it is also rare.The beauty of a gem is measured in terms of its clarity, brilliance, and color. Comments
what are the five characteristics a mineral must have. natural occuring, inorganic, has a crystal structure, solid, and a definite chemical composistion. What are the eight ways to identify a mineral. color, streak, luster, density, hardness, crystal systems, clevage and fracture, and special properties. streak.