Im Freien Felde 5 | 38895 Blankenburg | OT Derenburg
Harzkristall Marblets



We produce studio glass of the very highest quality! After initial planning in 2016, our furnace was completed in July 2021. We have been producing Marblets since November 2021.

We produce exclusively in Germany at our production site in the Glasmanufaktur Harzkristall in Derenburg (Harz).

What are MARBLETS?


MARBLETS are glass nuggets for remelting in studio glass furnaces. With a COE 100 and 10-12g they are ideal for remelting in studio glass furnaces.

MARBLETS are compatible with the cones, granules and powders of Farbglashuette Reichenbach as well as with the colours of KUGLER Colours.

Safety information and

Technical data

MARBLETS are packed in handy 20kg bags and can be ordered in minimum quantities of 60kg. Other order quantities: 120kg, 240kg, 500kg, 1000kg. Larger quantities on request.

MARBLETS do not have to be melted in the literal sense. They only need to be "reheated". Fill your furnace with MARBLETS immediately after work.

Gerhard Bürger


Behind the project "Harzkristall MARBLETS" is the investor Gerhard Bürger in cooperation with his Gerhard Bürger Foundation based in Derenburg and the Harzkristall glass manufactory.

The purpose of the foundation is the promotion of science and research, art and culture, the protection and care of historical monuments as well as the promotion of education, vocational training and student assistance. In addition to the Glasmanufaktur Harzkristall, the Elias Farbglashuette in Lauscha (Thuringia) also belongs to the Gerhard Bürger Foundation.

Learn more


Job offers

For our glass production we are looking for qualified employees!

Experienced machine operator/mechatronics engineer (m/f/d) for glass production in full-time (40 hrs.) wanted immediately!

To the job offer



Derenburger Glasproduktions- und Vertriebs GmbH

Im Freien Felde 5

38895 Derenburg

039453 680 11


Sales & Production: Gerhard Bürger

Technical advice: Peter Kuchinke