Sell 100g Natural Black Crystal Tourmaline Rough Stone Rock Mineral Specimen Healing best price

Description Type: natural stone Condition : 100% brand new and high quality Material: Tourmaline Crystal Stone Size : mixed 1-3cm Color : black package include: 100g package include: 100g Note :Mineral called tourmaline (live rock), is a natural crystal gemstones, tourmaline is a natural multi-element mineral, the main ingredients are magnesium, aluminum, iron, boron and other 10 kinds of trace elements beneficial to human body, it has unique piezoelectric effect and the thermoelectric effect, in the nature of these two effects simultaneously with the crystal is very rare, very high practical value. 1986, the United States Institute of Legg Mason high-tech Co., Ltd., was found: when tourmaline was crushed, an increase of energy.