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.
When a geode is broken, as in the example above, the minerals inside are revealed. Most geodes are completely filled with minerals, most often quartz. The quartz can be massive, crystalline, or layered, which is a variety called agate.But when most people think of geodes they think of spherical rocks that are hollow.hen a geode is broken, as in the example above, the minerals inside are revealed. Most geodes are completely filled with minerals, most often quartz. The quartz can be massive, crystalline, or layered, which is a variety called agate.