Drawn illustration, not a photograph
Spinel

Spinel

Long mistaken for ruby; several famous “rubies” in royal collections are spinels. Today it is valued in its own right for bright colour and rarely being treated.

Mineral
Magnesium aluminium oxide
Colour from
Chromium (red, pink), iron and cobalt (blue)
Hardness
8 on the Mohs scale
Known sources
Myanmar, Tanzania, Sri Lanka, Vietnam, Tajikistan
What to look for
  • Vivid, saturated colour; cobalt blue and hot pink are prized
  • A clean face
  • Usually untreated, which should be confirmed

CareDurable. Clean with warm, soapy water.

General guidance about the stone. Each actual stone is described individually, with its own photographs and any laboratory report, when you enquire.