Production Description: Set of five control crystals taken from the Pegasus Galaxy DHD control boxes, used in the production of Stargate Atlantis. These control crystals provided both the energy conduit and data necessary for a Stargate to dial its neighbors.

Technical Description: Set of five production-made clear acrylic panels cut into geometric shapes, all have simulated circuitry decals with Ancient writing, three of the decals are worn from production use, one also had etched simulated circuitry, measures 1.25in x .75in x .25in, 1.5in x 1in x .25in, 1.5in x 1in x .25in, 1.5in x 1.5in x .25in, 2.5in x 1.25in x .25in.