Stratum.black Open reference

Glossary · Condition

Grade and the G-scale

Stratum grades artifact condition 1–10, neutral words, and prints the trade's G-scale equivalent beside it (G-10 for a flawless example down to G-1 for a fragment).

Stratum grades artifact condition 1–10, neutral words, and prints the trade's G-scale equivalent beside it (G-10 for a flawless example down to G-1 for a fragment). The G-scale names are a published guide's editorial and are not reproduced; the numbers cross-walk.

Sources

Cite this article

Stratum Strata. "Grade and the G-scale" (Glossary). Stratum Strata pack 2026.09, as of 2026-09-16. https://stratum.black/strata/glossary/g-scale. Accessed 2026-09-21.

BibTeX · CSL-JSON

@misc{stratum-g-scale,
  title        = {Grade and the G-scale},
  author       = {{Stratum Strata}},
  howpublished = {\url{https://stratum.black/strata/glossary/g-scale}},
  year         = {2026},
  note         = {Glossary article, Stratum Strata pack 2026.09, as of 2026-09-16; sources: stratum. Accessed 2026-09-21.}
}

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.

Sources for this article: Stratum editorial (Stratum editorial). As of 2026-09-16; Strata pack 2026.09. Written by Stratum in our own words; the works cited are where the science lives, and none of their text is reproduced here.

Found an error? Write to drew@tyr.ac with the article id glossary:g-scale.

Stratum is the inventory, provenance and certificate system for fossil, mineral and shell collections. Strata is its open reference: every fact cites its source, and the credits page lists each one with its licence.

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