A glass lens blank for polishing in which a thickness of a defect-containing layer is suppressed to a minimum and thus it is possible to shorten the processing time required for grinding and polishing the glass lens blank for polishing after press-molding, a method of manufacturing the same, and a method of manufacturing an optical lens. A glass lens blank for polishing of which at least a main surface is a press-molding surface, wherein a defect-containing layer formed on the main surface has a thickness of 50 m or less.

The present disclosure relates to a mold for manufacturing a glass container including a left mold and a right mold, wherein the left mold includes a left fixed mold; and a left separated mold positioned on a side surface of the left fixed mold, the right mold includes a right fixed mold; and a right separated mold positioned on a side surface of the right fixed mold, the left separated mold is movable forwardly and backwardly while the left fixed mold is stationary, and the right separated mold is movable forwardly and backwardly while the right fixed mold is stationary.