January 24 Through February 4—TUCSON, ARIZONA: Annual show
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Thu Mar 28, 2024 6:01 pm

All times are UTC - 4 hours




Post new topic Reply to topic  [ 3 posts ] 
Author Message
 Post subject: anyone know what a "bon-color" filter does?
PostPosted: Wed Nov 28, 2012 9:39 pm 
Offline
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


Top
 Profile  
Reply with quote  
 Post subject: Re: anyone know what a "bon-color" filter does?
PostPosted: Sat Dec 01, 2012 10:56 pm 
Offline
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.


Top
 Profile  
Reply with quote  
 Post subject: Re: anyone know what a "bon-color" filter does?
PostPosted: Mon Jan 07, 2013 9:37 pm 
Offline
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.


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 24 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Gemology Style ported to phpBB3 by Christian Bullock