6mm Oregon Sunstone studs in sterling silver

Here's a great set of 7mm bicolor Oregon Sunstones set into a pair of simple and elegant sterling silver studs.
The copper schiller shines with an otherworldly glow that seems to radiate from inside the stones. Colors are green and bronzy tone. Certainly not your everyday. 
Oregon Sunstone,  the states official gemstone, is mined in the Eastern Oregon Outback in desolate conditions. 
These stones are 6mm each, and the pair weighs just over 2.2ct.