I am not sure magnification would be required to produce that piece. Some people have visual acuity in the range needed to produce that work. And it depends o

I am not sure magnification would be required to produce that piece. Some people have visual acuity in the range needed to produce that work. And it depends on age. I do wonder what tool they used. Perhaps a harder stone? However it was done, it's a great, beautiful piece! What a find!