Silicone vs. Resin for glass pebble mosaic window?

I am planning to make a glass mosaic on an old window using flat bottom glass pebbles. I first saw the idea here. I've been doing research and see DIYers using two methods to adhere the pebbles to the glass: either silicone or resin poured over the finished project. What method do you recommend and why. Thank you!
  4 answers
  • Tig14132961 Tig14132961 on Jun 20, 2017
    Resin dries clear

  • William William on Jun 20, 2017
    E6000 glue to adhere the pebbles. Resin over them to create a smooth solid transparent surface.

  • Da.herrmann Da.herrmann on Jun 21, 2017
    I used silicone glue, the one used for making aquariums. There`s a clear and a black glue. However, I sanded the bottom of the glass pebbles beforehand. I used tile grout to fill the gaps. The window has been outdoor for four years now, I only had to redo the wooden frame.

  • Tobey Cole Famolaro Tobey Cole Famolaro on Jun 23, 2017
    I would use silicone glue like the one used for fish tanks