CHAPTER 3CONCHOIDAL RAINBOW FRACTURESPicture #245-inch-wide Brazilian Quartz GlobeThis beautiful clear sphere came to me already broken.Somewhere along the distribution process, someone dropped it on a concrete floor.If they dropped it on dirt or a wood surface, it would not look like this.It wouldn’t even chip, much less crack.Quartz is very sturdy, almost as strong as […]
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