Assertion: amethyst | /r/Synonym | green quartz
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Source sentences:
text: This is a really hot topic in the gem world, with some believing that the name Amethyst can only be applied to purple Quartz, others saying if a Quartz’s green color is derived from heat treated Amethyst then it should be named Green Amethyst and others saying it should be known as Green Quartz or Prasiolite.