Re: Re: Re: Re: synthetic opal synthesis
The pores in turquoise are on the order of microns in size. The pores in opal are less than a micron in size. In other words, it is about 10 times harder to get any hardening agents into opal. Certainly worth a shot, however, if you have some samples to test.
I've infiltrated silica gel with stabilizing agents, but the mis-match in thermal expansion caused them to pop when you put them under a light and they heated up. Lots of things to think about in the silica systems that comprise opal.
From Henry Barwood - July 23, 2007 at 11:43:53