Dialga GX (Secret) from the Forbidden Light set (#138) is a Pokemon trading card released in 2018. It has a rarity of Rare Rainbow. Current fair market values for Dialga GX (Secret) are PSA 10: $676, PSA 9: $80, PSA 8: $26, Raw: $55. The most recent PSA 10 sale was $676 on August 9, 2026, with 28 sales tracked in the last 30 days. The most recent PSA 9 sale was $80 on August 3, 2026. A raw (ungraded) copy last sold for $55 on August 12, 2026. CardIndex has tracked 134 total sales across all grades for this card. There are currently 24 active listings for Dialga GX (Secret).
