15 - 16 inch strand temporarily strung (claspless). Our latest shipment of 4mm (3/12/12) definitely has a brown cast to it. Definitely brown. "Botswana agate is sometimes called the "change stone" because it helps handle change and transformation in a positive way. It gently helps make transitions of any kind in a way that is not as difficult or painful as it could be without it. Carrying a bit of Botswana agate in your pocket can help one cope easily with the minor changes that life throws at us daily."