v1.4.1

What's Changed

• fix: correct broken /tools/calculator link to /tools/measurement by @Bissbert in #29

Full Changelog: v1.4.0...v1.4.1

v1.4.0

130 learn YAML files updated across all content categories.

• Em-dashes converted to commas, semicolons, or parentheses throughout
• Filler adjectives (e.g. "crucial", "essential", "paramount") and transition adverbs (e.g. "Moreover", "Furthermore", "Additionally") trimmed where used as padding
• Numeric ranges, technical hyphens, and citation markers are unchanged
• Schema unchanged; all 138 YAML files pass validation

v1.2.0 — Citation infrastructure

Citation infrastructure across all 138 learn articles

This release adds structured citations to the entire FGA learn corpus, replacing freeform prose author-year citations with schema-validated reference entries and inline {cite:id} markers.

What changed

• 138 articles across 8 categories now carry top-level references: blocks following a CSL-JSON-inspired schema (kind, authors, title, year, DOI/ISBN/URL).
• 623 inline {cite:id} markers placed in sections, callouts, items, table captions, and subsections.
• Reference kinds restricted to: book | journal | web | standard.
• Backlink-friendly: every cite marker pairs with a bibliography entry at the article footer.

Coverage by category

Category	Articles	Claims annotated
Fundamentals	9	47
Equipment	13	52
Species	20	147
Identification	15	60
Phenomena	16	46
Origin (top-level)	15	75
Origin (sub-countries)	45	135
Market + Care	5	61

Top cited sources

• Read (2014) — Gemmology (3rd ed.). DOI 10.4324/9780080507224
• Hughes (2017) — Ruby & Sapphire: A Gemologist's Guide. ISBN 978-0-9645097-6-4
• Palke et al. (2019) — Origin trilogy in Gems & Gemology
• Nassau (2001) — The Physics and Chemistry of Color
• Gübelin & Koivula — Photoatlas of Inclusions in Gemstones v1 & v2
• Schumann (2009) — Gemstones of the World

Verification

• Schema validation (validate:citations): 0 errors, 45 unused-reference warnings (non-blocking, follow-up cleanup).
• Astro content collection build: 913 pages compile cleanly.
• Per-category audit reports retained at gemmology.dev/.tmp/citation-audit-*.md for traceability.

Downstream

gemmology.dev consumes this content via scripts/sync-knowledge.ts. A follow-up commit on that repository pins the sync to tag v1.2.0 and surfaces the version in the site footer.

Schema-conformance fixes folded in

• PR #12 — corrected kind: article → journal in phenomena
• PR #13 — batch-normalised invalid kind values across 42 files (article → journal, report → web)
• PR #14 — repositioned a misplaced references: block in paraiba-type.yaml

v1.1.1 — British English compliance and AI-tell removal

Style sweep — no content change

This release contains a style-only language sweep across the FGA learn content. No information, schema, or structure has changed; only how prose is displayed.

Changes

• Em-dashes: 742 → 26 across 84 YAML files. The 26 remaining instances are "—" null-cell markers in tables (crystal-systems.yaml, other-tools.yaml) and are intentional. All prose em-dashes have been replaced with the Oxford spaced en-dash – or, where two clauses can stand alone, with full stops, semicolons, colons, or parentheses.
• AmE → BrE: traveling → travelling in fundamentals/optical-properties.yaml. Citation titles, journal names, author names, mineral species, and chemical formulas were preserved verbatim regardless of spelling.
• AI-tell phrases removed: three "in today's [X] market" phrasings recast in species/pearl.yaml, origin/burma/ruby.yaml, and origin/east-africa/tsavorite.yaml.

Verification

• All YAML files parse cleanly.
• biss-languages:british-grammar validation pass on the diff.
• Zero AmE prose remaining in non-citation strings; zero AI-tell phrases.

Downstream

gemmology.dev picks up this content via npm run sync on its next build. No code change required on the website side.

Merged PRs

• #3 — style(lang): British English compliance and AI-tell removal across learn content

v1.1.0 — FGA Foundation + Diploma coverage gap-fill

What's new

Closes ~70 distinct content gaps from the May 2026 Gem-A FGA syllabus audit. Foundation coverage 72% → ~100%; Diploma coverage 47% → ≥80%.

Added

• Equipment (5): chelsea-colour-filter, sg-measurement, conoscope, advanced-lab-instruments, diamond-screening; spectroscope.yaml gains 27-spectra reference table.
• Fundamentals (3): colour-theory (CFT, charge transfer, colour centres), twin-laws, optic-sign-determination; expansions to crystal-systems and physical-properties.
• Phenomena (7): schiller, silk-effect, fluorescence, fire-dispersion, orient, tenebrescence, alexandrite-effect.
• Treatments-deep: Be diffusion, lead-glass ruby, HPHT diamond, CVD diamond.
• Origin (28 files, 11 regions): Thailand, Cambodia, Vietnam, Pakistan, Afghanistan, Tajikistan, India, Iran, Russia, USA, Mozambique, Zimbabwe, Ethiopia, Colombia mines, Brazil additional.

Pipeline

research-synthesist (10 agents, 4 waves) → citation-verifier (218 claims reviewed) → builders (file-locked scopes). Source priority: Gem-A → peer-reviewed → Webster/Read 7th ed. → Mindat.

Validation

Astro npm run build: 791 pages (was 697; +94). All YAMLs pass closed Zod schema.