Ferberites have been dramatically "devalued" by the quantities of them that have been coming from the Yaogangxian Mine. But this is NOT Yaogangxian material, and you can tell by the form and matrix-free arrangement, both subtly distinct. The central crystal here measures over 5 cm; other crystals stick out sculpturally in all directions. You can see how sharp the crystals are, and that the terminations are all intact! Ex. Dave Stoudt collection. Early Chinese material from the 90s.