Typical ruby from the Polar Urals. Tiny black spinel crystals can be seen onto the ruby.
[Photo/Collection: Maurice de Graaf]
Corund
Typical ruby from the Polar Urals. Tiny black spinel crystals can be seen
onto the ruby.
[Photo/Collection: Maurice de Graaf]
Blue Corund from Kukisvumchorr, Khibiny, Kola.
[Photo/Collection: Maurice de Graaf]
Another blue corund from Khibiny, this time from a xenolith on Eweslogchorr.
[Photo/Collection: Maurice de Graaf]