IMITATION OF GEMS SYNTHESIZED FROM CRYSTALLIZED GLASS. Shilova O.Yu., Petrovsky V.A., Shilov Yu.A.; Magistralnaya st. 31, apt. 17, Syktyvkar, 167022, Russia.

Imitations of gems synthesized by the method of crystallization of glass using different catalysts. The imitations of different colours and tints such as red, blue, light-blue, violet, green and emerald have been received. Chemical stability of imitations from glass-former was determined by dependence of chemical stability from degree of connectedness of elements is expressed by means of middle factor connectedness of structure framework Y. Corrosion processes of synthesized imitiations in agressive medium were investigated by the methods of laser interferometry and infrared spectroscopy.

It was determined that stability of imitations to the affect of agressive agents depends on stability of crystalline and amorphous phases and microstructure of crystal.

Chemical composition of initial glass on which depends the type of growing crystal and peculiarity of residual glass-phase was selected. The fundamental structure units of glass-phase are [ BO3], [BO4] and [SiO4] groups.