cff-version: 1.2.0
message: "If you use this dataset, please cite it as below. Data: Erebaur (https://erebaur.com), CC BY 4.0."
type: dataset
title: "Erebaur Gem Properties"
abstract: "Physical and optical properties of 60 gem materials: species, chemical formula, crystal system, Mohs hardness, refractive index, specific gravity and colors, with a verification status for every row. From the property table in Chapter 02 of the Erebaur encyclopedia."
authors:
  - name: "Erebaur"
    website: "https://erebaur.com"
    email: "info@erebaur.com"
license: CC-BY-4.0
url: "https://erebaur.com/stones/"
# The content review this release was generated from (src/lib/seo.ts).
version: "2026-09-19"
keywords:
  - "gemstones"
  - "gemology"
  - "mineralogy"
  - "minerals"
  - "crystallography"