28o               Moonstone, Selenite, and S uns tone.
	variety of orthoclase-felspar termed Adularia—a name which it derives from Mount Adula, one of the highest peaks of St, Gothard, where it occurs. The best specimens however, come from Ceylon. There can be little doubt that the Romans received consignments of it, with the other products of Taprobane (Ceylon), The pleasing lustre of this stone has led to its use by the jeweller, and a short time ago it had a great run, but at present is quite out of fashion. While one member of the Felspar group is known as Moonstone, another is recognised as Sunstone. This is a reddish or golden coloured variety of Oligoclase, exhibiting internal prismatic reflections and minute spangles due to the presence of included crystals of oxide of iron or of mica. It is found to a limited extent in Norway, and is but rarely employed in jewellery.