PRIMARY CHAKRA: Root ZODIAC: Capricorn ELEMENT: NUMERIC VIBRATION: 8 HARDNESS: 0.5 - 2.5 MINERAL CLASS: Mineraloids CRYSTAL SYSTEM: Amorphous CHEMICAL COMPOSITION: Coal from Carbonized / Fossilized Wood Scientific Properties Metaphysical Properties MINDFUL AWARENESS: This listing is for ONE nature made Jet stone. Jet, is very light weighted and is on the very low scale of Mohs measurement of the hardness structure of a crystal/stone. As such handle with care. It is a soft stone that can break easily. Natural gemstones come from an alchemy of minerals within the Earth. Due to the naturality, the stones may have tiny flaw and variation of colors. Meanwhile, cutting or polishing also makes every piece its own unique gemstone which will vary in color and size. All crystal healing uses, magical uses and metaphysical definitions are provided as a means of education, and do not imply a guarantee of effect. Those suffering from illness should consult with their General Practitioner in the first instance. Crystal healing is a holistic complementary healthcare practice and should be carried out by a suitably qualified crystal healing practitioner. Sacred Stone Collections is not an independent therapy, but one that is part of a holistic healing approach. By using this site and associated materials, you acknowledge and agree that you personally assume responsibility for your use or misuse of this inform.