Phenakite is a rare beryllium silicate mineral that typically forms as transparent to translucent crystals, often colorless but sometimes with pale yellow, pink, or brown hues. With a Mohs hardness of 7.5 to 8, it is relatively hard and suitable for faceted gemstones. Due to its high brilliance and rarity, phenakite is highly valued by collectors and gem enthusiasts. It is primarily sourced from Brazil, Madagascar, Russia, Myanmar, and the United States, where it occurs in pegmatite deposits alongside minerals like beryl and topaz.