The illuminating standoff device to support and illuminate transparent, semi-transparent, and/or a translucent light diffusing member. Thus, the standoff provides support and attachment to the wall or support structure, while at the same time allowing light to pass through said standoff and/or projecting or inducing light into the diffusing member while supporting and retaining its position. This allows one to support and secure the diffusing member, and illuminate the diffusing member, both through a single device.