FIG. 14. CRYSTALLINE FORMS OF NATIVE DIAMONDS.
To face p. 86.
No. 1. Diamond in the form of a hexakis-octahedron (the forty-eight scalenohedron), or a solid figure contained by forty-eight scalene triangles. According to Professor Maskelyne, this occurs as a self-existent form only in the diamond.
No. 2. Diamond in the form of a hexakis-octahedron and octahedron. From Sudafrika.
No. 3. Diamond in the form of octahedron with intersections.
No. 4. Diamond from Brazil.
No. 5. Diamond from Kimberley.
No. 6. Diamond from Brazil.