If you do any serious digging into stone, you'll discover that there's some seriously complex scientific information out there. You'll see words that look like they belong in a chemistry class, and information that contradicts the working trade names of your favorite stones.

 
Crystal Quartz Sticks
If you, like me, only took the most basic science curriculum and spent most of your class time wishing it was over, then this gloss-over might be of interest to you. If you're a mineral expert well versed in nomenclature and classification, I salute you and your big brain, and apologize in advance for any oversimplification.

The term "quartz" in the bead industry, usually refers to stones with quartz in the name - Tibetan Quartz, Rose Quartz, Rhutilated Quartz, Phantom Quartz, Crystal Quartz, etc. If you're inclined to get your science on, Amethyst, Citrine, and Prasiolite are classified as quartz, along with Carnelian,
Brown Rhutilated Quartz
Aventurine, Agate, Jasper, Onyx. These are, indeed, technically Quartz, and if the distinction between "cryptocrystalline" and "monoclinic polymorph" interest you, you'll learn that multiple forms of quartz with different properties (like crystal structure and solubility) can combine to give us Quartz that looks nothing like the clear crystals we normally think of.

Mixed Rhutilated Quartz
Amethyst

Erin, Dakota Stones
Congratulations! You made it through Dakota Stones' most science-y blog to date. If you're interested in more blogs and info (or if you're an expert who'd like to contribute to more meaty content like this,) shoot an email to [email protected].