Just Witchy's Blog — Yellow Obsidian

  Everyone knows that gemstones come in many colors--but when you think of Obsidian, you think of black, right? I know I do. It makes sense, since that is the most common color variety. But obsidian actually forms in a surprising range of colors? That's right! There is more to this gemstone than a Mohs hardness of 5-6.    Obsidian is a naturally occurring volcanic glass subject to chemical impurities such as iron, hematite, and feldspar which when combined with tiny gas bubbles can alter absorption and reflection, resulting in a multitude of colors and visual effects!    One well-known variety...