The invention relates to an assembly comprising a transparent “outer” packaging element (1) defining a chamber, and an “inner” packaging element (2) received in said chamber of the outer packaging element (1). Said inner packaging element (2) comprises at least first and second packaging portions (21, 22) that are transparent, each of which has at least one cavity (41, 42) for receiving an article, and a sealing sheet that is at least partially opacifying, and that comprises two portions applied over the two packaging portions (21, 22) in such a manner as to close said cavities (41, 42). The two packaging portions (21, 22) of the inner packaging element (2) are folded over towards each other towards a configuration in which the two portions of said sealing sheet applied over the two packaging portions (21, 22) of the inner packaging element (2) face each other.