Discover the natural beauty of Black River Agate from Argentina's Entre Ríos Province. Each specimen is naturally water-worn, presenting rounded or irregular nodules with captivating bands of white, gray, brown, and yellow—occasionally accented with warm orange tones. Many pieces feature striking contrasting bands or delicate plume-like inclusions throughout.
What makes these agates truly special emerges after cutting and polishing. Hidden within the weathered exterior lies intricate internal banding and patterns that reveal the stone's full artistic potential. Perfect for collectors, lapidaries, and those who appreciate nature's geometric artistry, Black River Agate offers both raw aesthetic appeal and the promise of stunning transformations.
Each piece is unique, shaped by time and water into one-of-a-kind formations. Whether you're a seasoned collector or exploring mineral specimens for the first time, these authentic agates connect you directly to Argentina's geological heritage.
