Phenacite

Phenakite, also spelt phenacite, is a fairly rare beryllium orthosilicate with the formula Be2SiO4, which is sometimes cut as a gem. Wikipedia says it occurs as isolated crystals and reports a large gem found in Sri Lanka in 2021, weighing 616.9 carats. Hall describes it as glassy and quartz-like, fairly rare and usually expensive, normally colourless but sometimes tinted yellow, red, pink or brown, with sources including Madagascar, Russia, Zimbabwe, Colorado and Brazil. Hall associates it with one of the highest vibrations of any crystal, with contact with angelic beings and the Ascended Masters, and with purifying and integrating spiritual energy. Hall says it heals the soul, teaches how to heal and activate the chakras, and has properties that vary with the mine it came from, Madagascan stones being interdimensional. For the body, Hall says it acts subtly to cleanse the body and open energy channels, and can boost other healing crystals. These are the claims of that author.