Tensor ring or pyramid?
Compare: The shape · Where it sits · Taking it along
Both solid copper, both from the energetic corner of the range. The shape differs, and so does where you put them.
Tensor ringThe shapeA closed round formWhere it sitsAround the tap, or loose beside a jug or glassTaking it alongFits in a bag and travels with youIn the traditionFeng Shui ties metal to round and curved forms€24,95View
PyramidSold outThe shapeAn open form of four edges meeting at a single pointWhere it sitsIn a fixed spot, one side on the north south axisTaking it alongStays where you aligned itIn the traditionThe line runs from Bovis through Drbal to Golodfrom €39,95View
If you want something that travels with you and fits around the tap, the tensor ring is the choice. If you want to set up a fixed spot at home, the smooth or the twisted pyramid stands there for years. Plenty of people have both and use them side by side.
More on using them is in using a tensor ring and using a copper pyramid.