Is this normal color variation within this issue? Is it possible the darker colors are Carmine Lake or not? Sorry about the different sized images, hope it doesn't effect the viewing.
And the actual pigment lake comes from an insect hence the aforementioned "process". It is a very subjective term and has as many definitions as questions but in philately it is a purple-ish color. These links will put you on the right track if you want to research it out. I used to have a whole post on the subject but I lost it after me computer crashed last fall.
Interesting little blip regarding the Carmine dye: "One reason cochineal is prized is its stability as a dye. The color remains constant over time, and is one of the most resistant natural colorants to the effects of light, heat and oxidation, even more so than some synthetic colorants." On the other hand, not so much for the other half of the color: Many lake pigments are fugitive because the dyes involved are unstable when exposed to light.
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Posted 02/24/2014 5:08 pm
