{
  "url": "https://www.moonstonehq.com/articles/prismatic-vs-its-own-arithmetic",
  "slug": "prismatic-vs-its-own-arithmetic",
  "title": "Prismatic Evolutions vs Its Own Arithmetic: The Most Hyped Set of the Era Is Losing to Its Registry",
  "summary": "Umbreon ex adds 190 slabs a week while its PSA 10 median slid from $6,775 to $6,225. The set's Pikachu ex is one of the few cards in the game gemming EASIER over time. Prismatic is beloved, scarce on shelves, and mathematically ordinary, and the tape shows all three at once.",
  "section": "Analysis",
  "published": "2026-08-28",
  "readMinutes": 5,
  "publisher": "moonstone",
  "findings": [
    {
      "value": "21,003",
      "measures": "Umbreon ex PSA pop",
      "basis": "+190/week and climbing"
    },
    {
      "value": "-8.1%",
      "measures": "PSA 10 median move",
      "basis": "$6,775 on Jul 21 to $6,225 on Aug 10"
    },
    {
      "value": "40.6%",
      "measures": "Pikachu ex recent gem share",
      "basis": "vs 26.6% lifetime: LOOSENING"
    },
    {
      "value": "?",
      "measures": "box simulation",
      "basis": "not tracked: boxes trade above our rippable band"
    }
  ],
  "tables": [],
  "charts": [],
  "sections": [
    "The Evolving Skies comparison everyone makes, honestly scored"
  ],
  "method": [
    "Registry and gem figures from daily PSA snapshots: Umbreon ex's 21,003 is the reading of August 21 and the +190 a week is measured across the August 6 and August 21 snapshots (20,596 to 21,003); Pikachu ex's 26.6% is gems over total at its first snapshot, August 3, and the 40.6% is the gem share of the 283 slabs added by August 21. Medians are verified eBay solds from the graded snapshot ledger, which answered this card weekly in the window: the readings are $6,774.50 on July 21, $4,550 on July 27, $6,225 on August 3 and again on August 10, and the -8.1% is the first against the last of those, so it is a July 21 to August 10 move and not a move to the publication date. The box simulation is honestly absent: Prismatic boxes trade above the modern rippable band our sealed tracker covers, so no Monte Carlo is published rather than an estimated one. Not financial advice."
  ],
  "terms": "Figures are moonstone's own recorded measurements, dated as published. Quote them with the population stated beside them. The article at `url` is the human form of this file."
}