A Bakerâs cyst is also known as a popliteal cyst or synovial cyst. It is a soft, fluid-filled lump that forms on the back of the knee. The lump is sometimes mistaken for a blood clot.
Geodes are typically agates. Agates are very common stones, and usually do not fetch a high price, but they are gorgeous to look at. Geodes in particular can be quite incredible, because they are like little miniature caves. On the outside, they look like plain, rough stones.
A geode is a type of rock formation that occurs when a pocket of air or gas is trapped and forms a cavity in sedimentary or igneous rock. A hard crust forms around the outside of the cavity.Groundwater, which often carries dissolved minerals in solution, seeps through the rock over a long period of time.lear quartz, smoky quartz, amethyst, calcite, celestite, and chalcedony are examples of some minerals you may find inside a geode. Geodes from the same location often have the same type of mineral crystals. Some geodes are filled in with beautiful layers of mineral crystals.