smaragdine brightness in an infinite variety of greens..."
-SM Stirling, A Meeting At Corvallis (New York, 2007), Chapter Eighteen, p. 483.
My spell check does not recognize "smaragdine" but my Anderson fan sensibility did. I have noted one appearance of the word in Anderson's Technic History. See the above link.
Addendum: The above link is to a search result. Scroll down in order to see more than this post.