Gemstone necklace with a black tourmaline (schorl) ~ 30mm donut ~ including 1.5mm leather cord in antique brown for knotting. *Update Oct. 2025 - finally new A quality available again* You will receive a tourmaline donut with minimal to no inclusions on one or both sides, which is why it is sold as A-grade. We also have a different quality available for half price! Schorl is the only tourmaline whose power can benefit children, women, and men equally. It is rightly considered the most powerful and best protective stone for body and soul. It helps you both distance yourself from the outside world and free yourself from your own confusion. This creates clarity and relief for your overheated mind. Schorl is a wonderful companion in your professional life if you want to use your mental abilities in a focused, clear, and efficient way. It promotes logical and rational thinking and frees you from unnecessary brooding and mental distractions. At the same time, this clarity and a small dose of pragmatism ensure inner sovereignty and increase one's own healthy, self-confident demeanor. Black tourmaline has been known as a mineral in Europe since ancient times. The name schorl for black tourmaline first appeared around 1500, while the name tourmaline itself was first mentioned around 1636. Black tourmaline is therefore still known as schorl today. Originally, the name schorl meant "impure, useless ore," as black tourmaline, in particular, permeated valuable ores. Black tourmaline, also called schorl, is formed exclusively by volcanic activity. The main deposit areas for black tourmaline are Brazil, Madagascar, and Afghanistan. Black tourmaline is often intergrown with various types of quartz, orthoclase, albite, or various types of mica. The crystal formation of black tourmaline can be quite diverse. For example, black tourmaline can occur in clustered crystals, radial crystal formations, as well as randomly arranged crystal rows or floating steps. Dense masses without any crystal formation are also found in black tourmaline. Black tourmaline consists primarily of sodium, iron, aluminum, fluorine, hydrogen, oxygen, and boron. The composition of schorl can vary depending on where it is found. Calcium, chromium, lithium, magnesium, manganese, or titanium are occasionally present – ​​all of these elements lend black tourmaline a personal touch, depending on where it is found. We hope you enjoy browsing our shop. If you like what you see, we would be very happy if you would follow us here :) "A stone is the condensed history of the universe" ~Art of Nature Berlin~