# Alchemical Symbols (錬金術記号)

> The signs that recorded substances and operations between secrecy and sharing. The system binding planets to metals vanished into chemical notation, but survives as the graphics of mystery, quoted to this day.

- IndexStyle No.437 — https://indexstyle.org/styles/alchemical-symbols
- Kind: Style · Family: Symbol Systems · Era: medieval–18th century
- Mood: Luxury, Rebellion, Nostalgia
- Color cues: #e9e6dd / #67635d / #171615 (cues taken from reference works, not a fixed palette)

## Defining characteristics

- Planet-metal correspondences
- Geometry composed with crosses
- Cipher-like secrecy
- Tables handed down

## Best used for

- Comparing primary sources and canonical works
- Extracting principles that transfer to other media

## Research method

This entry records a historical style; derive the treatment from its sources rather than a fixed recipe:

- Observe the letters, signs and scale of reference works
- Extract the one structure that governs gaze and information
- Verify the materials and behaviors specific to era, region and process

## What to avoid

Don't reduce it to surface signs. Verify the context of era, region, technology and makers.

## Application checklist

Before calling a piece an application of this style, check it against the defining characteristics:

- [ ] Planet-metal correspondences
- [ ] Geometry composed with crosses
- [ ] Cipher-like secrecy
- [ ] Tables handed down
- [ ] At least one reference work below has been studied directly
- [ ] The caution above ("What to avoid") has been addressed

## Related styles

- **Heraldry (西洋紋章学)** — Europe's armorial system born of battlefield identification: strict description in the language of blazon, the rule of limited tinctures, and a grammar of division and combination — an 800-year design system. → https://indexstyle.org/styles/heraldry
- **Celestial Atlas (星図の様式)** — The Baroque celestial atlas layering constellation mythology over observation. Cellarius's Harmonia Macrocosmica marks the summit of an age when scientific diagram could also be decorative art. → https://indexstyle.org/styles/celestial-atlas

## Further study

- Newton's alchemical notebooks
- the turn to Dalton's symbols
- quotation in modern occult imagery

## Reference works

- 化学・哲学記号表 17世紀 — https://commons.wikimedia.org/wiki/File:A%20Table%20of%20Chymicall%20%26%20Philosophicall%20Charecters%20with%20their%20Significations%20as%20they%20are%20Usually%20Found%20in%20Chymicall%20Authors%20both%20Printed%20%26%20Manuscript%20-%20DPLA%20-%209da4d3b98b35ee7a3a92f3b5594482e3.jpg
- 『医療錬金術師』 — https://commons.wikimedia.org/wiki/File:The%20Medical%20Alchemist%20by%20Janneck%20FA.2000.00.275.jpg

## Source of record

- Science History Institute — https://www.sciencehistory.org/

## Machine surfaces

- JSON: https://indexstyle.org/api/styles/alchemical-symbols
- Image-generation prompt (legally clean): https://indexstyle.org/styles/alchemical-symbols/prompt.txt
- MCP: https://indexstyle.org/mcp (tools: search_styles, get_style, compose_styles; prompts: image-prompt, apply-style)

## 日本語

物質と操作を秘匿と共有のあいだで記した記号群。惑星と金属を結ぶ図像体系は、化学記号に置き換えられて消えたが、神秘のグラフィックとして現代も引用され続ける。

特徴: 惑星と金属の対応／幾何学と十字の合成／秘匿のための暗号性／一覧表の伝承
注意: 表面的な記号へ還元せず、時代・地域・技術・制作主体の文脈を確認する。