This solid oxidized Sterling post earrings have as stones of choice semi polished raw blue kyanite, with its denim palette and the beautiful work nature creates in this stones. I'm a Kyanite fan, any color, any style, faceted or raw I find them utterly appealing, reason why you will find it a lot in what I make. 
The stones are set with prongs on a folded Sterling texture that somehow make me think of fabrics creating not just a beautiful estethic "whole" but also light weight comfortable pair.
The earring posts secure ith pression nuts -curly style- and I added the silicone tip nuts for you to wear them with both or have the choice to use the silicone nuts or sterlng nuts. 
For measurements, the pictures where the earrings rest on the bust show their real size since it is a human size mannequin, some of the other pictures include a standard size business card, a USA quarter coin and a ruler to allow you to have as much idea of their real size as I possibly can provide. 
If you need some metric measurement just let me know.