I have taken a lovely pair of 4mm faceted citrine stones and hung them from a 8mm sterling silver ring which dangles from a sterling silver chain. The earwires are also made by me from 21 guage sterling wire. These earrings are very lightweight, easy to wear, and I am always surprised by how many things they go with. 

The earrings measure 1 3/4" (4.5cm) from the top of the earwire to the bottom of the stone. I have many other gemstones available. If there is a specific gemstone or color you were looking for just ask!