This old set of various diamonds has a really fascinating mix of 11 stones that are all complete crystals of different habits. We think it was put together over 50 years ago, from the box style (Riker Mount) and old label on the back. Included here are sharp octahedrons, dodecahedrons, a triangular macle twin, and several other twin habits including the extremely rare "Star of David" twins. It would cost me more than the cost of this set, to reassemble it at today's prices on good diamond crystals! Joe Budd Photos.