Large Highly Polished Sodalite Sphere
Large and highly polished sodalite sphere which although primarily blue, also boasts black, white, grey and orange. These additional colours are caused in part by inclusions of the mineral calcite.
Sodalite is a rock forming mineral which grades 5 to 6 on Mohs scale of mineral hardness. Its primary use is as a lapidary material and when as a gemstone it tends to be shaped as a cabochon. With that said, the rare transparent crystals from Mount St Hilaire in Canada are almost always faceted.
There are just three large deposits in the world where the mineral sodalite can be found the most important of which is the Bancroft Mine in Ontario, Canada.
One of many blue minerals, sodalite is often mistaken for lapis lazuli which is in fact not a mineral but a metamorphic rock. With closer inspection it's usually quite easy to tell one from the other. Sodalite which is considerably lighter was discovered in the early 1800's whereas lapis lazuli has been known since the time of the pharaohs in Ancient Egypt.
Weight (grams) : 900
Size (cms) : 8.7 in diameter