Rock #6707

Twenty years of cutting literally thousands of nodules, geodes, agates, jaspers and jasp/agates from The Carver and, in February 2026, something new and different appeared.

This was an unimpressive typical looking nodule (see above). The agate banding in the three areas—right, left, and center—are typical of agate formation in Carver nodules. And then, the geological oddity.

Red appears to bleed into the blue of the original color of the stone, but then suddenly there is a dark blue/black band, and then the lighter blue coloration of the original stone. The 3 agate areas of the stone are clearly colored somehow.

Rock #6707 Detail
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If the coloration followed the bands, this would not be unusual. In fact, it would be typical. If the coloration followed or flowed along a crack, this would be very common and is what makes agates cool. This phenomena is seen in photo 6163 below.

Rock #6163
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If the color flow was just like the left half of the stone (#6707)—dark red permeating from left to right, and diffusing to a less red color the further to the right, and the red infused— this I can understand. But, not here. Take another look at the close-up of the stone:

Here, we go to a dark blue/black band that suddenly stops on the right side of the band. And now we see the light blue color of the original stone appear. Something happened to the left half of the stone. So the right part of the stone represents the stone’s original color and character.

What happened to mix the red and the blue into a darker deep blue/black band makes no sense to me. If I had to guess, I would make a not very informed guess that heat or radiation of part, but not all, of the stone may be the answer. For example, purple amethyst when heated or irradiated can change from purple to yellow, which we call citrine. When the transition from amethyst to citrine is partial, you get a purple stone that slowly transitions to partially yellow. This is called ametrine. While I can understand how amethyst and heat can create citrine and ametrine, I am still uncertain as to how the colors in this odd stone would change in a manner as seen in this stone. I hope there are smarter people than me looking at this posting. Perhaps, someone will have a better answer than this attempt of mine.

For further viewing enjoyment, I have included three other stones which have nothing at all to do with the subject of this posting.

Rock #6713

Rock #6710

Rock #6686