Post subject: anyone know what a "bon-color" filter does?
Posted: Wed Nov 28, 2012 9:39 pm
New to the Forum or The Quiet Type
Joined: Fri Oct 19, 2012 8:16 pm Posts: 2
hi... I have a filter and I don't know what it is/does. the filter itself has a green plastic border that flips in and out of a square leatherette cover. "bon-color" is embossed on the top plastic border and "made in austria" is on the bottom. I've had it for over 20 years. Anybody know what this is? under incandescent light a chunk of aqua rough turns bright green, brown topaz crystal turns red and reddish brown zircon turns red. thanks bennett
Post subject: Re: anyone know what a "bon-color" filter does?
Posted: Sat Dec 01, 2012 10:56 pm
Gold Member
Joined: Mon May 14, 2007 11:00 am Posts: 1133 Location: Monterey, CA
This appears to be similar to the filter I purchased around that time. It was too expensive (for me) and I got the idea of making sets of less expensive filters for gemology. Thus was born my first Ruby and Aqua filters, and it went on from there.
I suspect you would find your filter would perform similarly to my Aqua-Filter.
I believe John Harris has a web site which shows the responses for my filters.
Post subject: Re: anyone know what a "bon-color" filter does?
Posted: Mon Jan 07, 2013 9:37 pm
New to the Forum or The Quiet Type
Joined: Fri Oct 19, 2012 8:16 pm Posts: 2
thank you, Bill - and my apologies for not responding sooner... I have your filters and appreciate them tremendously... and I believe I have been to the website you mention... I'm pretty sure I found the site referenced here... I don't remember where I got the bon-filter but if it was expensive, someone must have given it to me LOL... thanks again...
Bill Hanneman wrote:
This appears to be similar to the filter I purchased around that time. It was too expensive (for me) and I got the idea of making sets of less expensive filters for gemology. Thus was born my first Ruby and Aqua filters, and it went on from there.
I suspect you would find your filter would perform similarly to my Aqua-Filter.
I believe John Harris has a web site which shows the responses for my filters.
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