The Types segment classifies BGO crystals by structural and compositional attributes that influence performance and cost. Single‑crystal BGO, produced via the Czochralski method, delivers the highest optical uniformity and is preferred for high‑precision detectors, representing roughly 40 % of unit shipments despite its premium price. Polycrystalline material, fabricated by sintering, offers lower manufacturing expense and adequate light output for bulk‑type scanners, accounting for about 30 % of volume sales. Doped BGO variants, such as cerium‑doped formulations, modify decay time and improve radiation hardness, capturing an estimated 20 % of the market where fast timing is essential. Finally, hybrid assemblies that combine BGO with other scintillators (e.g., LYSO) address niche requirements in mixed‑energy detection, contributing the remaining 10 %. This taxonomy clarifies how each type underpins specific application demands and informs capacity planning across the supply chain.