We show an adaptation of the silicate index versus spectral type (or temperature) as published in G. Suárez & S. Metchev (2022). Silicate index for the brown dwarf population observed with the Spitzer Space Telescope (gray points) is discussed in G. Suárez & S. Metchev (2022). Additionally, we highlight in navy four brown dwarfs categorized as young, low-gravity objects from G. Suárez & S. Metchev (2023). At the bottom, we plot the range of temperatures for the four JWST-observed and retrieved giant exoplanets explored in this work, indicating where they might land on this distribution if a silicate index were possible to calculate. Dayside temperature is indicated by a triangle, nightside temperature by a square, and T_eq by an intersecting line. We also plot the condensation temperatures for quartz at 1 bar (purple) and 0.001 bar (blue) as estimates of photospheric silicate condensation points in brown dwarfs and giant planets, respectively. Corresponding colored bands represent the range of T_Cond for quartz at [Fe/H] = 0.1 x solar (cooler) and [Fe/H] = 10 x solar (warmer).