Large round cherry quartz stone in come style Tibet silver drop earrings
Tibetan silver is used primarily in jewelry components, and is similar to pewter - an alloy of copper, and sometimes tin or nickel, with a small percentage of pure silver. Its overall appearance is of aged silver, but it can be polished to provide highlights on complex castings. Today, the nickel content is reduced or absent, due to common allergies to this metal.
http://en.wikipedia.org/wiki/Tibet_silver
There are many different varieties of quartz, several of which are semi-precious gemstones. Especially in Europe and the Middle East, varieties of quartz have been since antiquity the most commonly used minerals in the making of jewelry and hardstone carvings.
http://en.wikipedia.org/wiki/Quartz
I wear these earrings myself and These earrings look amazing. The photos don't do justice to the look of wearing them. Great bright summer fashion to brighten your look.