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How are citrine crystals formed?

Answer:

Citrine crystals can form together with amethyst to form ametrine and bi-colored quartz. found this on the following site: http://www.rosiejiggs.co.uk/gemstones.htm

Citrine, a form of quartz crystal, may have derived its brownish-orange tint from irradiation. Amethyst quartz crystals can also be turned to a citrine color by heating them.

First answer by ID3407515909. Last edit by Jones1rocks. Contributor trust: 1563 [recommend contributor recommended]. Question popularity: 8 [recommend question].

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