Posted 6 years ago
In the booklet JOHANN LOTZ - Glas aus dem Bohmerwald 1824-1939, published by the Waldmuseum Zweisel and the Museum Sumavy in Kaspersky Hory, it says that Loetz held patents for marmoriertes glass in various colors - Onyx, Karneol (Carneol), Achat (Agate), Serpentin (Serpentine), Jaspis (Jasper), Lapis rosa (Pink Lapis), Blutmarmor (blood marble), Hellmarmor (light marble), Chalcedon (Chalcedony), Malachit (malachite) and others. All of these glasses were meant to resemble the stones after which they were named. Harrach was also known to make this type of glass... an example of which I think we have here. Harrach marmoriertes was not confined to natural stone colors, and I have seen yellow swirled with purple, brown, red, and now this piece, which is custard swirled with pink, lined in highly UV reactive uranium glass. Gilt oroplastic rim and enameled vines and flowers with insects finish the decoration. The lobed shape and enameled vines, etc., are other Harrach markers. This raises a question in my mind though about the patents held by Loetz... in this day and age of searchable patent databases, is it possible to find the original patents? Did Harrach use the other more other whimsical colors because of the Loetz patents (or did the companies collaborate, as did Harrach and Moser on the variegated lemon glass we see from time to time?) More research is in order!