SEATTLE MINERAL SHOW; MAY, Sat 22nd - Sun 23rd; 2021
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Tue May 18, 2021 7:18 am

All times are UTC - 4 hours




Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: ClarifyingVarious Kinds of lighting..?
PostPosted: Fri Nov 27, 2020 1:33 pm 
Offline
New to the Forum or The Quiet Type

Joined: Mon Dec 29, 2014 6:58 pm
Posts: 7
Maybe this is not the right forum, but here goes... I get confused when dealing with color change stones and the lighting needed to exhibit the color change. With the demise of the incandescent bulb, what could you use to duplicate the "color temperature" (eg 2500-3500 K) of these bulbs ? Florescent bulbs give off one kind of light. and the LED's seem to give off a different type of light. Can you shed some light (ugh!) on this topic for me?


Top
 Profile  
Reply with quote  
 Post subject: Re: ClarifyingVarious Kinds of lighting..?
PostPosted: Fri Nov 27, 2020 2:13 pm 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 20754
Location: San Francisco
Yes, this is a topic I have posted about on several occasions.
The best light sources to view color change are the original ones, daylight and candle or flame light.
Candle light is ≈ 1900K
Height of Day light ≈ 5600K
These sources are still readily available.
If you want to fake it up:
Image
Candle light is ≈ 1900K
Height of Day light ≈ 5600K
Click here for corresponding article


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 1 guest


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