A resin molding, comprising an optically transparent plate-shaped portion, wherein the plate-shaped portion includes: - a first surface having a smooth surface portion; and - a second surface opposite to the first surface and having plural sections (S1, S2), wherein each of the plural sections (S1, S2) has a width (W1,..., W4) and includes one or more convex portions which have one or more ridge lines extending in a ridge line direction (SR1, SR2), and wherein: - the ridge line direction (SR1, SR2) of the one or more convex portions of at least one of the plural sections (S1, S2) is different from the ridge line direction (SR2, SR1) of the one or more convex portions of one or more of others of the plural sections (S1, S2), characterised in that - accordingly at least part of light entering from the first surface causes total reflection at the inclined opposite surfaces of the at least one convex portion or adjacent convex portions of the plural convex portions in the plural sections (S1, S2), thereby causing total reflection of light toward the first surface which is the outer surface of the resin molding, resulting in impartment of metallic appearance to the resin molding when the first surface of the resin molding is observed from outside, - due to the different ridge line directions (SR1, SR2), the range of angles in which total reflection is caused by a section (S1, S2) toward the first surface is different from the range of angles of total reflection in the other sections (S2, S1), such that the metallic appearance of the resin molding changes when the viewing angle or the lighting angle changes, and - the ridge line of the one or more convex portions of at least one of the plural sections (S1, S2) has a height different from a height of the ridge line of the one or more convex portions of one or more of others of the plural sections (S1, S2). comprising an optically transparent plate-shaped portion, wherein the plate-shaped portion includes: - a first surface having a smooth surface portion; and - a second surface opposite to the first surface and having plural sections (S1, S2), wherein each of the plural sections (S1, S2) has a width (W1,..., W4) and includes one or more convex portions which have one or more ridge lines extending in a ridge line direction (SR1, SR2), and - a first surface having a smooth surface portion; and - a second surface opposite to the first surface and having plural sections (S1, S2), wherein each of the plural sections (S1, S2) has a width (W1,..., W4) and includes one or more convex portions which have one or more ridge lines extending in a ridge line direction (SR1, SR2), and wherein: - the ridge line direction (SR1, SR2) of the one or more convex portions of at least one of the plural sections (S1, S2) is different from the ridge line direction (SR2, SR1) of the one or more convex portions of one or more of others of the plural sections (S1, S2), characterised in that - accordingly at least part of light entering from the first surface causes total reflection at the inclined opposite surfaces of the at least one convex portion or adjacent convex portions of the plural convex portions in the plural sections (S1, S2), thereby causing total reflection of light toward the first surface which is the outer surface of the resin molding, resulting in impartment of metallic appearance to the resin molding when the first surface of the resin molding is observed from outside, - due to the different ridge line directions (SR1, SR2), the range of angles in which total reflection is caused by a section (S1, S2) toward the first surface is different from the range of angles of total reflection in the other sections (S2, S1), such that the metallic appearance of the resin molding changes when the viewing angle or the lighting angle changes, and - the ridge line of the one or more convex portions of at least one of the plural sections (S1, S2) has a height different from a height of the ridge line of the one or more convex portions of one or more of others of the plural sections (S1, S2). - the ridge line direction (SR1, SR2) of the one or more convex portions of at least one of the plural sections (S1, S2) is different from the ridge line direction (SR2, SR1) of the one or more convex portions of one or more of others of the plural sections (S1, S2), characterised in that - accordingly at least part of light entering from the first surface causes total reflection at the inclined opposite surfaces of the at least one convex portion or adjacent convex portions of the plural convex portions in the plural sections (S1, S2), thereby causing total reflection of light toward the first surface which is the outer surface of the resin molding, resulting in impartment of metallic appearance to the resin molding when the first surface of the resin molding is observed from outside, - due to the different ridge line directions (SR1, SR2), the range of angles in which total reflection is caused by a section (S1, S2) toward the first surface is different from the range of angles of total reflection in the other sections (S2, S1), such that the metallic appearance of the resin molding changes when the viewing angle or the lighting angle changes, and - the ridge line of the one or more convex portions of at least one of the plural sections (S1, S2) has a height different from a height of the ridge line of the one or more convex portions of one or more of others of the plural sections (S1, S2).