Natural 19.30cts chevron amethyst cabochon 27.5x18 mm pear loose gemstone s26134

Blue John

Obtained from the Derbyshire England, Blue John is fluorite composition extracted from the Blue John Cavern, one of the four show caves in Castleton. Broadly speaking, this alluring stone is found in the stripe of colors ranging from deep purple to red then dark tones of blue as well as yellow. The varied colors of this charismatic gemstone make its name “Blue John” odd to be called. In the history, it was known that the French miners of that age used to call this fascinating gem nugget “bleu-jaune”  that means blue-yellow. Blue John, admitted to being the most expensive fluorite in the world is cherished and loved by the women of all ages. Roman legend believes that the eminent properties of the Blue John keep ...