Posted 11 years ago
belleverre
(79 items)
This was my first venture (1985) into collecting Tiffany glass. The 7 inch vase is made of both an inner layer and an outer layer of gold ruby glass, with the white opal and black abstract decoration sandwiched between them. I have seen two others of similar design since acquiring this one. It is signed "L.C.T. Favrile". (1985)
I love it but must be going blind because the only colours I see are red & black with a very high gloss I will defiantly take your word on it as you know better then most what is & what isn't. Apart from doing great work you have a great eye it's fantastic.
Beautiful.
Stunning!
A similar piece can be found in Revi's "American Art Nouveau Glass" on the fifth color page following page 110, above the wisteria lamp. He called it Samian Red, but I have seen other Tiffany reds called Samian.
Interesting to find out it's a paper weight.
A very nice example...
please post how it is signed and production numbers.
Thanks !
ks85- Sorry for the delay in answering your question. I've been out of town. Yes, gold was used to create this color. A couple of the other elements used to create ruby glass are selenium, and copper which is used for most reds such as stoplights, etc. Working with red glass can be trickey since the glass is colorless or amber when worked. It must be cooled a bit and when reheated it "strikes" the red color.
Fascinating ...
Wondering if you know the chemical process off-hand ... Heat and flames suggests some form of oxidation ... which presumably could be modified by the atmosphere in which the process was carried out ...
Thanks for the date references ... Excellent!
SteveS -
Most all glass colors are made with metal oxides. Gold is an exception in that it is held in suspension as a colloid. I don't believe the atmosphere has any effect in this case, and I don't know how the changes in temperature have an effect at the atomic level.
However, for iridescent glass, the parison is placed in a reducing atmosphere which reduces the metal oxides by removing the oxygen atoms, resulting in a shiny metallic surface. It is then sprayed with a solution of metallic salts which causes the surface to become iridescent. At least I believe this is how it works.