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|Colour:||Blue (Artificial, ...|
The original definition of 'Turquenite', as used in lapidary and mineral trade since the 1970s is as an artificially-coloured blue variety of Howlite or Magnesite dyed to resemble Turquoise and sold as a (fake) gemstone, often as tumbled stones. It is not suitable for carving (usually) as the dye does not often penetrate deep into the stone.
Confusingly, since 2004 the name has also been used by an American company to denote any mineral that has been subject to a process that the manufacturers call the "Eljen Process" which claims to make soft stones such as Turquoise harder and have more vibrant colours than in their original untreated state. Unlike the original 'Turquenite', this 'Turquenite' is apparently suitable for carving and lapidary use.
The American company has applied for a US trademark for the name 'Turquenite', however it remains to be seen whether the prior-use of the name as a dyed howlite/magnesite material will prevent the trademark being granted.