This apatite is found in the "market Mine," nearby the famous Ojuela mine nearby Durango, Mexico. I have been buying these crystals for over 12 years, and finding larger crystals in good condition is difficult, primarily because the crystals are not in their original matrix, as the deposit collapsed millions of years ago. Occasionally clusters are available, and they look like someone mixed up apatite crystals in cement and let it dry. This is a Large crystal from this location. There are two small chips around the girdle of the crystal, understandable from this location. There is a bit of natural variation to the lustrous surface. Comes mounted on an acrylic base.