Dims: 1.7 x 1.4 x 0.6" (4.3 x 3.6 x 1.5 cm)
Wt: 19.4 g
Notre Dame du Laus, Quebec, Canada
This small thumbnail specimen consists of a cluster of heavily-intergrown Spinel crystals that are partly embedded in a small amount of pale orange calcite. I count at least 7 different crystals, or attempts at the formation of individual crystals- as most of them are aligned with each other, I suppose that one could refer to the cluster as a single unit. All are in excellent condition, showing no human-induced damage, and together, have dimensions of 0.5 x 0.4 x 0.4" (1.3 x 1.0 x 1.0 cm). Their octahedral form is quite good, considering their intense intergrowth, and all edges are relatively well-defined, and all primary and secondary faces are flat, generally clean, and possess a bright pearly luster. Their color is basic black, and thus they are all opaque.