Blue Rock is one of the Earth's oldest precious stones. This ancient stone keeps a variety of colours from light-toned blue to a vivid navy blue. The absolute most common blue stone discovered today is actually alexandrite, which can easily vary from a light-toned blue to a extremely … [Read more...] about The jewel for September, phoned the “Star of David”, is actually the birthstone for Taurus. It is actually believed that this star sign might have its own origins in Egypt.