The TTA Praha Ltd. production of Art Deco jewelry is based generaly on long term traditions of some family workshops from Jablonec region. “Grandgrandfathers and grandfathers of our present designers and master were a members of this famous „Jablonec family“ and their skillfull masterspieces crate our collection. The collection is established in brooches, necklaces, and earrings made with tombac (jewelry metal consisting of 90% copper and 10% tint) in combinations with glass. Silver jewelry is combine with glass or precious stones such as turquoise, lapis, carnelian, chrysoprase, moldavite, amethyst, river pearls, opals, etc. The gold jewelry bears only natural semi-precious stones.