Quite strange and not studied artifact in a form of combined pieces of multi-colored glass, which was obtained by merge of the γ-artifacts. Somehow its field affects the refraction of light rays and reconstructs them for a short period of time. Stalkers have learned to use it to create a visual copy. The δ-group artifact has more powerful radiation field. In equipment the effect can be gained only from one artifact at a time.

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In-game cost: 243864 Silver