[en] Eu²⁺ and Vb²⁺ ion luminescence and absorption spectra in quartz glass are investigated. A decisive effect of technological factors on luminescent properties of quartz glasses activated by bivalent rare earth ions is noticed. Presence of two luminescent complexes of Eu²⁺ ion with different luminescence properties is stated. It is suggested that they are in compliance with two different mechanisms of excited state deactivation. The first mechanism - solved configuration transition 4f^n-15d-4fⁿ, the second one - emissive transition from charge transfer state