Plate 雪 / 1954 雪晶分類圖譜 — Crystal Morphology Survey
Dark-field photomicrography
Hokkaido Cold Laboratory
Temperature × Supersaturation Taxonomy

A Letter
from the Sky

Each specimen photographed under reflected light — frosted ice-cyan figures suspended on a near-black field. Sorted by growth temperature and humidity, six-fold symmetry, one specimen per labeled cell. A scientific grid, never festive decoration.

X — Temperature °C0 → −22
Y — Vapor σlow → high
High supersaturation ↑n = 08
stellar dendrite
sectored plate
fern dendrite
hollow column
stellar plate
solid prism
spatial needle
broad branch
This is the Snow Crystal Classification design system, applied by Curio Design — a design-style library for AI agents. Full Snow Crystal Classification guide → designbycurio.com/learn/snowflake-crystal-classification