Crystal and stones » sulphur

Lapis-Lazuli

precious stones — Wed, 16 Sep 2009 16:16:15 +0000

The lapis-lazuli, sometimes called “azure stone,” is almost always blue, though often containing streaks of white and gold colour, the latter of which are due to the presence of minute specks or veins of iron pyrites, the former and colourless streaks being due to free lime, calcite, and other substances which have become more or [...]

Magnetic and Electric Influences

precious stones — Wed, 16 Sep 2009 14:35:43 +0000

The word “electricity” is derived from the Greek “elektron,” which was the name for amber, a mineralised resin of extinct pine-trees. It was well-known to the people of pre-historic times; later to the early Egyptians, and, at a still later date, we have recorded how Thales -the Greek philosopher, who lived about the close of [...]