Brucite is a magnesium hydroxide that has recently charmed collectors with vivid lemon to sulfur-yellow botryoidal crusts, chiefly from Pakistan's Balochistan. Soft (2.5–3) and strictly a collector's mineral, its color saturation is unmatched in the mineral kingdom's yellows.GEMIC Institute offers natural brucite specimens, individually photographed and certified by our laboratory in Siem Reap. Each is one of a kind; shipped worldwide with tracking and our 30-day guarantee.