Spinel is the magnesium and aluminium member of the larger spinel group of minerals, with the formula MgAl2O4 in the cubic crystal system. The name comes from the Latin word spinella, a diminutive of spine, in reference to its pointed crystals. It crystallizes in the isometric system, commonly as twinned octahedra, has a hardness of 8, and may be colorless but usually comes in shades of red, lavender, blue, green, brown, black or yellow. Some spinels are among the most famous gemstones, including the Black Prince's Ruby and the Timur Ruby in the British Crown Jewels. In this atlas it is the mineral species that spinel gemstones record.
Facts
Chemical Formula Hardness (Mohs)The Wikipedia article states that its hardness is 8. Classification
Crystal System Classification Connections
Classified As
Entity-backed identity for the material classification this material already carries as an enum fact, pointing at the class subcategory of the same name. The enum fact itself stays on the entity unchanged.
Crystallizes In System
Entity-backed identity for the crystal system this mineral already carries as an enum fact, phase 3 bucket conversion (docs\design_entity_backed_browse_buckets_20260928.md, w-bucketconv-divmore2-0929). The original fact stays on the entry unchanged.
In Discipline
In the Other Atlases
- Also in Divinity Atlas: Red Spinel, mineral species of there.
Sources
1. Spinel (Wikipedia)
Wikimedia FoundationSpinel, lead paragraph
It has the formula MgAl2O4 in the cubic crystal system.
Spinel, article text
Its hardness is 8
View the Source Reader Challenges (0)
No disputes yet. Spotted an error or a better source? Open the first one.
Sign in to dispute this or suggest a correction.