Sachin Art Patwa

Maharashtrian-style nose rings or Naths.These specific nose rings are typically characterized by: Shape: They are curved or crescent-shaped, often following the contour of the nostril. Design: They are traditionally elaborate, featuring pearls (often large, round ones) and a central colored gemstone (like the maroon/ruby-colored one seen in the image). They also often incorporate smaller colored beads (green and red in this case) as accents. Material: While they often look like gold, they can be made of gold or gold-plated base metals with cultured or imitation pearls and stones. 
This particular style, with the specific arrangement of pearls and the central stone, is widely recognized as the traditional Marathi Nath or Peshwai Nath, worn by women in the state of Maharashtra, India, for cultural, religious, and festive occasions.