Note:  Do not rely on this information. It is very old.


Labradorite, a variety of plagioclase felspar (q.v.), named from Labrador, where it occurs in great quantity in rocks of Archaean age. It contains about 53 per cent. of silica, 30 per cent. of alumina, 12 per cent. of lime, and nearly 5 per cent. of soda. It is generally grey, and exhibits a rich play of colours, chiefly blue and green, due to included fibres, for which reason it is sometimes used in jewellery. It is a constituent of basalts and diabases.

“We must not be proud of our bodies, because the matter is from the earth, yet not dishonour our bodies, because the mould and shape are from the divine wisdom.”
–Matthew Henry, Commentary, Job 10