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Description
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Rainbow cal silica cab ~
Offered here is a designer cabochon of rainbow cal silica, from Mexico. It is easy to see how it got the 'rainbow' moniker, as it really does have a rainbow of colors, and my wife Rain absolutely loves this stuff! Is it natural? Well, folks have produced documentation that this allophane material is naturally occuring rather than man-made, but I'm far from convinced... I've also heard there's a photo in circulation showing of a piece with a modern aluminum pop top embedded in it, though I haven't seen it. But regardless of its origin, they were certainly charging a LOT for rough in Tucson this year! It is very popular stuff, and this eye catching stone is beautifully striped and amazingly colorful. It should be a delight to design some fun item of jewelry to best show it off. The cab has a nicely rounded dome of 5mm, an gracefully elegant shape, and a glossy polish both front and back.
Size: 61x26mm
Weight: approximately 31 carats
Price: SOLD See current gemstones for sale
 Rainbow calsilica
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![](calsilica3.jpg")