Gemstones come in every color and shade under the sun. Through time, a few of these gemstones have become considered precious gemstones through their color, beauty, rarity and durability. Some features of gemstones are the same regardless of whether the gemstone is a sapphire, a ruby or an emerald and so firstly we will look at the aspects of jewelry gemstones which are universal to all gemstone types: Color The color of a gemstone is determined by how it absorbs and reflects light energy. The different materials and impurities which make up gemstones each absorb and reflect light differently...