ruby glass

1. glass having a red color resulting from the addition of gold, copper, or selenium to the batch.
2. any glass of a dark red color.
[1790-1800]

* * *

glass
      deep-red glass deriving its colour from gold chloride. Originally known in the ancient world, its rediscovery was long sought by European alchemists and glassmakers, who believed it had curative properties. A Hamburg physician, Andreas Cassius, in 1676 reported his discovery of the red colouring properties of a solution of gold chloride, subsequently called purple of Cassius. Ruby glass was produced c. 1679 by a Potsdam chemist and glass technologist named Johann Kunckel von Löwenstern (Kunckel von Löwenstjern, Johann), who kept the recipe a secret. The difficulty in producing this colour lay in the fact that the glass at first appears gray and turns red only on reheating. This secret was rediscovered in the glassworks at Ehrenfeld at the end of the 19th century. Meanwhile, Bohemian glassmakers produced a ruby shade using copper, and glassware flashed with a thin ruby-glass casing became a characteristic 19th-century Bohemian product.

* * *


Universalium. 2010.

Look at other dictionaries:

  • ruby glass — rubino stiklas statusas T sritis chemija apibrėžtis Koloidiniu auksu raudonai nuspalvintas stiklas. atitikmenys: angl. ruby glass rus. рубиновое стекло …   Chemijos terminų aiškinamasis žodynas

  • ruby glass — rubino stiklas statusas T sritis fizika atitikmenys: angl. ruby glass vok. Rubinglas, n rus. рубиновое стекло, n pranc. verre rubis, m …   Fizikos terminų žodynas

  • ruby glass — noun Date: 1797 glass of a deep red color containing selenium, an oxide of copper, or a chloride of gold …   New Collegiate Dictionary

  • ruby glass — /ˈrubi glas/ (say roohbee glahs) noun glass coloured red by colloidal suspensions of elemental gold, copper, or selenium …   Australian English dictionary

  • ruby glass — noun : glass of a deep red color produced by the use of selenium or especially formerly by the addition of an oxide of copper or the use of gold chloride …   Useful english dictionary

  • gold ruby glass — noun or gold ruby : ruby glass …   Useful english dictionary

  • Glass production — Glass is common in everyday life, from glass windows to glass containers. The manufacture of glass for everyday purposes may involve complexity and automation. This article deals with the mass production of glass. Glass container productionGlass… …   Wikipedia

  • Glass coloring and color marking — may be obtained by 1) addition of coloring ions,[1][2] by 2) precipitation of nanometer sized colloides (so called striking glasses[1] such as ruby gold [3] or red selenium ruby ),[2] 3) by colored …   Wikipedia

  • Glass — This article is about the material. For other uses, see Glass (disambiguation). Moldavite, a natural glass formed by meteorite impact, from Besednice, Bohemia …   Wikipedia

  • ruby — n., adj., & v. n. (pl. ies) 1 a rare precious stone consisting of corundum with a colour varying from deep crimson or purple to pale rose. 2 a glowing purple tinged red colour. adj. of this colour. v.tr. ( ies, ied) dye or tinge ruby colour.… …   Useful english dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.