Rare and very hard to get original XXL size Boji Pair stones (540g !) plus a smaller size pair both with a certificate. According to the original source/website these are no longer offered and are out of sale by the original dealer! The female and male stone in the pair have special energies. The largest stone is impressive 7 x 6 x 3cm Please check the original website for more information: bojistones.com They adapt to all environments, the energ being like a ‘good friend’. Manifested by nature, enjoyed by mankind, Boji stones bring the synthesis of male/female, duality, and the actualization of singularity, allowing on to recognize and to understand the self, and the independence and liberty of ones nature. Boji stones can be used to align the energy centers, to relieve blockages, to stimulate the CHI, to ground and center, and to provide protection. It is believed that certain gemstones and minerals have beneficial health and spiritual properties. Catawiki cannot guarantee or be held liable for these suggested attributes which have no scientific evidence and cannot be considered a substitute for traditional medical treatment.