I received this from my father-in-law, who was involved in antiques. The material is probably buffalo horn. The painting of the horse is very beautiful. I apologize that the artist is unknown. It is a brooch or pendant, but it is also very beautiful as a decorative item. Suitable for accessories such as kimonos. Center dimensions: 7 x 5 cm I am also listing a jade (probably) bolo tie with a carved horse head. It is also wonderful. I would be happy if you would take a look. The following is AI analysis: A decorative item made of natural material with a horse painting. - Design: Decorative item with a horse painting - Material: Natural material (probably horn) - Shape: Flat decorative item with a hole - Color: Gradations of brown and black - Usage: Artwork or decorative item Thank you for viewing.