Simply a killer with perfect form, zoned crystals are arranged in a radiating cluster. These three species are found together as zoned sections of individual crystals at this site. This find at Huanggang (Inner Mongolia) have redefined these species and are widely regarded as the worlds best. The tips of these crystals are translucent and show some internal zoning but the overall display quality of this piece is why this is so exceptional. Helvite and Genthelvite are fairly rare but known from several locales. However good Danalite is ultra rare worldwide these rank as world class crystals.