This color is caused by radiation, and only certain locations are known to produce these smoky crystals. In Arkansas crystals, there are naturally occurring smoky crystals that have a light brown to grey color. 'Crystal clear' either came from quartz crystal or from blown glass crystal ware, but you get the idea.Īside from its clearness making the crystal more valuable, there are certain colors you will find in quartz. If the entire crystal is clear from tip to base, then it has more value than if partly milky. How transparent is the crystal to light? If milky from tip to base, then the value is less than if the tip or termination is transparent. 'Cut' is not applicable here, but maybe we could substitute 'condition', which would include flaws or breakage. Clarity, color, carat, and cut are the buzz words for gems. In gemstones, the 4 'C's' are the determining factors when grading a stone, and to some extent those C's extend to crystals. we may not be able to define it well, but we certainly know it when we see it. The overall appearance counts toward beauty. Please remember 'beauty is in the eye of the beholder.' And that 'beauty' may be precisely what makes one crystal more pricey than another. Several factors enter into determining the 'value' of any mineral specimen. What are Quartz Crystals Worth? Putting a value on quartz cryst als

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