As promised... this is mostly just a holding page until I have time to actually analyse the wand & crown. This is taken from my comment on Glinda's costuming directory.
The Crown: it’s made up of stars or snowflakes like the wand’s tip. It looks like there are 9 total: there’s a big one in the very centre (about 3” in diameter) and they taper off in size until it ends past her ear. I think the snowflakes are mounted above a circlet, because if you look closely at the pictures, they almost float above the hairline. Also, the crystals in the crown aren’t just white crystals: you can see in the more studio-like pix that there’s a sky blue in there that matches the dress. An anonymous commenter says she's heard that it is made out of glass.Glinda wears the crown with the Engagement Gown and the Bubble Gown.
The wand is basically a silver snowflake with white and blue crystals mounted on a silver/steel rod. I think the snowflake is about 5-6” across, and while the length of the wand varies (based on the height of the actress) it seems to run between 3-4 feet.
Julia sent me this great resolution shot of the wand's head:
I have uploaded over 150 new pictures to the Wand And Crown gallery.