From(the seller): wowo tou
三点 测娇
Another type of niobium crystal produced by molten salt electrolysis has two subtypes, one resembling a ladder and the other resembling a shuttle. The former is a parallel connected crystal of a cube, while the latter is a parallel connected crystal of a cube with interlaced twin crystals. It is said to also come from the Soviet Union (I am not very sure). Undoubtedly, this niobium crystal also possesses a beautiful structure.