Restoration

Addition of material that was not part of the specimen — filler, sculpted parts, painted detail — to replace what is missing. Stated as a percentage of the surface and by location; legitimate when disclosed, fraudulent when not.

Sources

AAPS — Code of Ethics
Mindat — Advice for people selling and sorting a mineral collection

Cite this article

Stratum Study. "Restoration" (Glossary). Stratum Study pack 2026.09, as of 2026-09-16. https://stratum.black/study/glossary/restoration. Accessed 2026-09-20.

BibTeX · CSL-JSON

@misc{stratum-restoration,
  title        = {Restoration},
  author       = {{Stratum Study}},
  howpublished = {\url{https://stratum.black/study/glossary/restoration}},
  year         = {2026},
  note         = {Glossary article, Stratum Study pack 2026.09, as of 2026-09-16; sources: stratum. Accessed 2026-09-20.}
}

Citations carry the pack version and the article's as-of date so they resolve to the same text later. The facts themselves belong to the sources listed below; cite those for the science.