Color change - change of hue, color shift - change of tone. The first is characteristic of a small amount of precious stones and other materials, the second is common to all colored subjects and objects, including all colored gems.
Borderline might be not visible to our eyes due low sensitivity, but could be visible using specific tools...
I would define it something like that..
_________________ All stones are alike, all stones are precious; but man sees only a few of them... Maurice Maeterlinck
Users browsing this forum: No registered users and 2 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