These beads are approximately 6mm in size on a 14" strand. This listing is for one randomly selected strand.
Aquamarine, meaning "sea water" in Latin, is a blue or cyan variety of beryl. It occurs at most localities which yield ordinary beryl.
Mohs scale: 7.5-8
Locality: U.S.A, Brazil, Colombia, Zambia, Madagascar, Malawi, Tanzania and Kenya.