Coyamito Agate Face-Polished Chunk
This natural Coyamito agate features a beautifully face-polished surface showcasing striking concentric banding in shades of white, gray, golden yellow, amber, caramel, and reddish-brown. The polished face reveals intricate fortification patterns and attractive orbicular ("eye") formations, while the rough exterior preserves the specimen's authentic natural character and texture.
Naturally formed over millions of years, each Coyamito agate is unique in its color, banding, patterns, and shape. The combination of the polished face and natural rough exterior makes this specimen an excellent choice for mineral collections, decorative display, lapidary work, or as a distinctive jewelry-making material.
Please note that all measurements and weights are approximate. Display stand shown is for presentation purposes only and is not included.

























![Large Cut and Polished Banded Agate Crystal Geode Slice: Thick slice of 'fortress' agate with grey, brown, black and orange banding, the internal cavity lined with small pale purple amethyst crystals. 575 grams, 24.6 cm (9 3/4 in.). [No Reserve] From Brazil](https://p1.liveauctioneers.com/1191/426518/237925159_1_x.jpg?height=181&quality=70&sharpen=true&version=1785755501&width=181)