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Back. From the Tucson Gem and Mineral Show and in other ways too, I think. Got lots of raw gems and rough chunky rocks. This is my first time at the Tucson show looking at this category of goods. The previous years there I always hunted semi-precious gemstones and beads and findings. This is like a whole different world. No less in size and completely extensive. Below is a picture of one flat of Cactus Quartz, or Amethyst Cactus, or Amethyst Drusy.