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kennethreitz ce93f429a2 Add Knowledge: the vault's reference shelf, crosslinked across the site
Publish the Obsidian vault's Knowledge folder as /knowledge (881 notes,
67 folders), with a Knowledge item in the nav and footer.

- scripts/import_knowledge.py regenerates data/knowledge from the vault:
  slugged paths, folder notes as index pages, wikilinks resolved to site
  links (or plain text), callouts, highlights, and Dataview tables
  rendered statically. Personal notes are withheld via an exclusion
  list plus a privacy guard.
- tuftecms/core/knowledge.py builds a concept index from note titles and
  aliases. First mentions on ordinary pages link to their Knowledge note
  (capped, never in headings, code, links, or sidenotes); Knowledge pages
  list related notes and where they're mentioned across the site; other
  pages get a Related Knowledge block.
- Knowledge URLs join sitemap.xml (so the sweep test covers them), never
  displace existing legacy slugs, list alphabetically, and mermaid
  diagrams render client-side only on pages that have them.
2026-10-18 20:08:46 -04:00

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---
description: Clear water under a blue sky — the mind and the voice in agreement.
source: obsidian-knowledge
---
# Sodalite
> *Clear water under a blue sky — the mind and the voice in agreement.*
---
## The Stone
Sodalite is a deep royal blue marbled with white veins of calcite, and it is often mistaken at a glance for its more famous cousin lapis lazuli — but sodalite runs a cooler, more uniform blue, without the pyrite gold, and its white threads wander through the stone like clouds or cracks in ice. Polished, it has a soft, waxy lustre; the best pieces are a saturated navy that seems to hold depth the way a night sky does.
It is a quiet, thoughtful stone, more contemplative than dazzling. The blue is the blue of clarity — of open air and calm water — and the character matches the colour: cool, reasonable, unhurried.
## Correspondences
| Attribute | Value |
|-----------|-------|
| Colour | Blue with white veins |
| Chakra | Throat ([Vishuddha](/knowledge/chakras/vishuddha)), Third Eye ([Ajna](/knowledge/chakras/ajna)) |
| Element | Air |
| Planet / Zodiac | Jupiter / Sagittarius |
| Hardness (Mohs) | 5.5–6 |
## Properties
Sodalite is the stone of logic and truth — a rational mind’s ally. It clears the head for clear thinking, marrying the intuition of the third eye to the honest expression of the throat so that insight can be spoken plainly and without heat. It is turned to for calm communication in tense moments, for the discipline to reason things through, and for the courage to stand by one’s own truth. Where emotion floods the argument, sodalite lowers the temperature and lets sense return.
## In Practice
It is a fine study and meeting companion — kept on the desk or held in the hand to steady the nerves before speaking and to keep debate rational rather than reactive. Placed between throat and brow in meditation, it aligns what is understood with what is said. Writers and thinkers keep it near to hold a train of thought together and to cool the impulse to argue rather than clarify.
## Related
- [Lapis Lazuli](/knowledge/crystals-and-gemstones/lapis-lazuli)
- [Turquoise](/knowledge/crystals-and-gemstones/turquoise)
- [Kyanite](/knowledge/crystals-and-gemstones/kyanite)
- [Vishuddha](/knowledge/chakras/vishuddha)
- [Ajna](/knowledge/chakras/ajna)
- [Crystals & Gemstones](/knowledge/crystals-and-gemstones)