Theodor Fahrner sterling ring with beautiful deep blue and green stone cabochon. The ring is a 5 1/2, and clearly shows Fahrner's hallmark - TF in a circle. It is also marked STERLING, and there are some other markings as well. The ring is in excellent condition. Theodor Fahrner was one of the most successful European costume jewellery manufacturers of the early 20th century.Founded in 1855 in Pforzheim, Germany, by Theodor Fahrner and Georg Seeger, it became renowned for its Art Nouveau, Jungendstil, Arts & Crafts and Celtic Revival fashion jewels. Fahrner’s son, also named Theodor, took over in 1883 and by 1895 was the sole proprietor. The company rose to prominence in the late 19th century, and in 1900 won a silver medal at the Paris Exposition for its simple steel pieces.
Between 1900 and 1919 the company enhanced its reputation further, working with prominent artists such as Georg Kleeman and Joseph Maria Olbrich, on a range of jewellery that was subsidised by mass-produced pieces.
Fahrner’s over-riding principle was that the artistry of the jewellery was more valuable than its materials. A result of this philosophy was that the company’s designs used silver, enamel, pearls and semi-precious stones, including marcasite, agate, amazonite, amethyst, malachite, onyx, rock crystal, chalcedony, quartz and citrine. Theodor Fahrner Junior died in 1919. His jewellery is very collectible!
I am not a gemologist, I think the stone is either azure-malachite, or the Eilat stone (also known as King Solomon's stone). Considering the age of this ring, this is certainly a possibility. The location where the Eilat stone was mined has been closed. Eilat Stone derives its name from the city of Eilat where it was once mined, it is a green-blue inhomogeneous mixture of several secondary copper minerals including malachite, azurite, turquoise, pseudomalachite, chrysocolla. The Eilat stone is the National stone of Israel, and is also known as the King Solomon Stone.
Azurite stone has been known about since ancient times, and its name comes from an old Persian word that means 'blue color'. Although it may occur as crystals, it is more commonly found as a rough stone. This blue stone has been found in a large number of locations, including Egypt, Namibia, Russia, France, Australia, Peru, Chile and the USA. It is a copper based stone which is commonly found in copper mines. It often occurs naturally combined with other copper based stones, including the bright green Malachite and the lighter green Chrysocolla as well as being one of the minerals that makes up Eilat Stone.
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