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About the artwork
A small, green-clad figure with a leaf-like hat stands within a large, crystalline mask, surrounded by shimmering, fractured light. The mask, composed of dark and light facets, appears to be forming or breaking apart, with sharp, glowing edges. The background is a dark, rocky landscape.
Geometric and crystallineMysteriousSparklingFragmentedEthereal
Generated by AI vision — may contain mistakes.
Double Rare✦ Foil
Cornerstone Mask Ogerpon ex
Prismatic Evolutions · #058
$0.88latest TCGplayer median
Card details
Buy or sell
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Price history
Price history (TCGplayer median, ~180 days)
Graded prices
PSA population (pop report, as of 2026-07-01)
Total graded
92
PSA 10s
30
PSA 9s
51
Gem rate
32.6%
Gem rate = share of all graded copies earning PSA 10. See gem rates & grading ROI across the catalog →