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The Pyraminx Crystal is a pretty nice quality puzzle. I can tell why they called it a pyraminx crystal because it moves like a pyraminx but looks like a crystal. I plan on making a full review of the pyraminx crystal soon.
you can buy the pyraminx crystal here:
thecubicle.us: https://thecubicle.us/advanced_search_result.php?search_in_description=0&keywords=pyraminx+crystal&osCsid=igovugr8iki9gmphs5ac7l90l5
all in all I would recommend you go out and buy the pyraminx crystal. Its a really fun puzzle and I great addition to the cube collection. Patreon: https://www.patreon.com/cubeorithms