Its hues range can range from blueish green blue green greenish blue to deep blue and its tones can vary from very light to moderately dark. In reality aquamarine is found mainly in brazil which is where the largest ever piece was found and that piece was over a hundred. Blue topaz morganite and aquamarine pendant you will find aquamarine stones included on the list of birthstones by month as it is a february march and october birthstone.