Dims: 1.14x0.98x0.34" (2.91x2.49x0.88cm)
Wt: 0.30oz (8.4g)
San Benito County, California, USA
This is a melanite garnet, the black variety of andradite. All of the garnets have a 12-sided form, with each face having a diamond shape (rhombic dodecahedrons). There is a layer where the melanite appears almost massive, making it clear that the garnets fill a crevice in the host rock, forming good faces only where the cavity opened up.