the.com/spinel

the gem that fooled kings into wearing rubies that weren't

means A hard, glassy mineral made of magnesium aluminium oxide that crystallizes in octahedrons and comes in red, pink, blue, and other colors — long mistaken for ruby and sapphire until chemistry told them apart.

from The name likely comes from the Latin 'spinella,' a diminutive of 'spina' meaning 'thorn' or 'spine' — a nod to the sharp, pointed octahedral crystals the stone naturally forms. Some link it instead to the Greek 'spinos,' a sparkling word, but the thorn story is the one most often told. For centuries red spinel passed quietly as ruby in royal treasuries; the famous 'Black Prince's Ruby' in the British crown is, in truth, a spinel that fooled its way to the top.

royal impostor
The Black Prince's Ruby in England's crown is spinel
perfect cubes
Crystals grow into flawless octahedrons, no cutting needed
color range
Comes in red, pink, blue, violet, black
name origin
From Latin spinella, meaning little thorn
late respect
Only recognized as distinct from ruby in 1783
for instance

balas ruby — red spinel gemstone mined in badakhshan, afghanistan, historically mistaken for ruby in crown jewels

black prince's ruby — 170-carat red spinel set in the imperial state crown of england since 1367

spinel steven universe — antagonist character introduced in the 2019 steven universe film, a sentient gem

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