Prehnite gemstone is a yellowish green to brownish yellow, With a hardness of 6 - 6.5 and some heat sensitivity and brittleness. Until recently Prehnite gemstone was a fairly rare gemstone. Prehnite gemstone is regarded as a rare precious gem and Australia has about 90% of the worlds resource of this beautiful gemstone. Prehnite gemstone beads cut in a beautiful faceted pear shape. The Prehnite gemstone originates from Namibia. It is a delicate light yellow green color. Very rare and hard to find, especially in such high quality. The Prehnite gemstone beads measure 6.5 - 7 mm, 45 pieces, 59 carats. some colors of Prehnite gemstone can be confused with similar looking specimens of serpentine or nephrite jade.