примеры использования
Even the famous Black Prince Ruby in the British Imperial State Crown is actually a spinel , not a ruby.
The spinels have low Mg number in comparison with Alpine-type peridotites, suggesting hydrothermal alteration in which Cr is preferentially retained in spinel.
Legendary for its blood-red rubies and spinels , the Mogok stone tract of northern Myanmar also produces an amazing array of other minerals.
Rubies were found in Burma and Ceylon, topaz, beryl, garnet, amethyst and pearl in Ceylon and Southern India, and spinels and deep blue sapphires in Afghanistan and Kashmir.
His collection includes emeralds and spinels of a staggering size (some of them are nearly 300 carats).
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