Sodalite is so named because of its sodium content. It is also unusual because it contains chlorine. Sodalite is used for ornamental rock and for making jewelry. It is considered a semi-precious stone. Hardness is 5.5 to 6.0 with a specific gravity of 2.1 to 2.3.
Normal colors are light to dark blue, white, grey and sometimes green.
The specimens and bookends we sell are dark blue in color. We sell beautiful blue sodalite bookend sets.