Quartz with inclusions refers to clear quartz which may contain any one of many minerals within its crystal body. The most common mineral inclusions are Chlorite(green or lavender), Hematite (red/red sparkles), Goethite(orange yellow), Rutile(golden needles), Clay(brown), Mica(dark hexagon), Specular Hematite (dark flakes, sparkle), Epidote (green needles), Tourmaline (black needles) Liquid or gasses (bubble) and even Gold and Silver. These combinations occur when a mineral, already present is enclosed by the quartz as it grows. The minerals could also have formed in fissures or cracks of the quartz which had already finished growing. Many crystals are enhanced by the presence of these minerals which often display lovely optical effects, color or visual interest.