The term "garnet" in the context of porn video tags refers to a type of sexual activity or fetish involving the use of garnet stones, which are typically deep red gemstones. In this case, it could refer to either using the garnet stone as a prop during sex, incorporating the stone into BDSM play, or it might simply be used as a descriptor for individuals with a specific attraction or fetish related to garnets. Note that the term "garnet" here does not mean the same thing as it would in general usage when referring to a red gemstone. Rather, it is being utilized as a descriptor for a specific type of sexual activity or fantasy