Articles written by Farlang Team

THE RUBY, SAPPHIRE, ORIENTAL TOPAZ, etc ALL the above stones are properly corundums, being identical in every particular but that of colour, which difference may be said to be the

THE PANAMA PEARL FISHERIES The bordring Hands, seated here in ken, Whose Shores are sprinkled with rich Orient Pearle, More bright of hew than were the Margarets That Caesar found

VIRTUE OF STONES AND GEMS THough it will not perchance prove very difficult to propose to you my Conjecture about the Causes of the Vertues of Precious Stones; yet I

  Opal Der Opal, dieses in der Natur so verbreitete Mineral, ist wie der noch häufigere Quarz, der uns weiter unten eingehend beschäftigen wird, in der Hauptsache Kieselsäure, aber im