one of the oldest stones used in Chinese medicine — dense, slightly matte, cool against skin. worn flat as a thumb ring. it doesn't do anything you can measure. people have been wearing it for a long time anyway.
material: black bianstone size: inner diameter 0.86 in / 2.2 cm, width 1.1 in / 2.8 cm, weight 1.5 oz / 43 g temperature: cool
questions
what is a banzhi? a banzhi is a thumb ring. it began as archery equipment — worn on the drawing thumb to take the pressure of the bowstring — and outlived the bow as an object people wear, turn and keep a hand busy with.
what is bianstone? a dark, dense stone with a slightly matte surface that stays cool against skin. that is what we can tell you about it.
does it do anything? no. it doesn't do anything you can measure. people have been wearing it for a long time anyway.
will it fit my thumb? inner diameter is 0.86 in / 2.2 cm and the band is 1.1 in / 2.8 cm wide. measure across your thumb before ordering.
which of the four rings should i pick? bianstone and lantian are the heavy ones at 1.5 oz / 43 g. the xiuyu is the light one at 0.6 oz / 17 g and spins faster. the magnetic one moves a compass needle. same shape, different stone.
