| One of the rarest of all the garnet varieties is andradite, the calcium iron garnet. |
| The andradite crystals are part of a large skarn deposit that was once mined for iron ore. |
| The portion of the skarn where the rainbow garnets are found is essentially a coarse-grained aggregate of pure andradite. |
| The third major find in recent years is green andradite, some of which may be considered demantoid. |
| The name topazolite is considered obsolete by many, with yellow andradite or yellow demantoid being preferred names for the stones described. |
| There are varieties of andradite that include, demantoid, which is the most valuable of all garnets, melanite, and topazolite. |
