![]() They show vitreous luster on most of the multiple parallel and stepped pyramidal terminations, which are mostly in very good condition with some abraded areas. It is naturally terminated smoky quartz crystals with very dark natural color - they are so dark that they appear to be black. This rare quartzoid specimen is completely natural - just as it was found within the earth. Quartzoid Specimen Dimensions: 3.5" wide x 3.4" x 2.1" Natural Smoky quartz specimen weighing one pound This is a great specimen to fool a geologist with at first glance, since the form of the quartz's 4-sided crystal "tips" look more like cubic black flourite crystals! See a different position view of these quartzoids. The mineralogical term for this bi-pyramidal form without prismatic faces is "quartzoid". The c-axis is parallel to the base so the "4-sided terminations" standing up are actually the juncture of the terminations of the two 6-sided pyramids. This naturally terminated smoky quartz specimen has 4-sided terminations, but these are actually the juncture of double-ended (bi-terminated) bi-pyramids with no prismatic faces. The smoky quartz shows brilliant vitreous luster on multiple parallel and stepped pyramidal terminations, which are mostly in fine condition. This rare quartzoid specimen is completely natural - just as it was found within the earth! It is naturally terminated smoky quartz crystal with very dark natural color - it is so dark that it appears to be black. ![]() ![]() Quartzoid Specimen Dimensions: 4.2" wide x 3.5" x 2.8" Natural Smoky quartz specimen weighing 1.3 Lbs
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