It’s been restored by the National Trust. A better article about Terry and the dress is here–from reading a biography of her and her son, Edward Gordon Craig, who is mentioned at the end of the article, it seems like her life was one of those that are Glamour in the magazines and Bloody Miserable Work on the ground. My opinion of EGC is that he needed smacking, hard and often.
The shiny bits on it? Beetle wings.
The best picture I’ve found is on flickr. It reminds me (the skirt, especially) of this pattern on Knitty.com. (Does everything in the world remind me of knitting? …rather not say…but a Terry colored shawl would be awesome. I probably wouldn’t go with beetle wings for the shiny bits.)