Catherine the Great's Ruby
| Gemstone: | Spinel |
|---|---|
| Source: | Probably Badakshan, Afghanistan |
| Weight: | 414.3 cts |
| Colour: | Fine red |
| Current Owner: | Russian State |
| Current Location: | Russian State |
| Information Source: | Dictionary of Gems and Gemology, 3rd Edition (Mantutchehr-Danai), 2009 |
| History: | Owned by Catherine the Great of Russia, and set in the top of the Grand Imperial Crown. |