Yes, agate is formed by volcanic action, so you can understand the flowing, lava-like lines, but how on earth - at this microscopic level - can it have such detail, and so many colour variations in a tiny fragment less than a centimetre across?
Fortunately, it is yet another minor miracle of nature, but only digital microscopes can get down to this level of detail.
So, this is a lava rainbow that human eyes have never set on before.
And as a silk scarf? Sensational!