Hope L

I have some beautiful turquoise glass tiles, and I want to use them to do mosaics on glass candle holders for centerpieces. I would like to avoid using opaque grout, because I want the glass tiles to pick up every bit of light possible. But I am not experienced enough to get the tiles extremely close together (I'm breaking them and using oddly shaped pieces). Could I use epoxy? Or is there a clear type of grout or some type of glue that would work? If so, does anyone know specifics of what to get and how much it would cost? I'm looking to do this for a lot of centerpieces for my wedding. Thanks!

I am working on a painting that is primarily watercolor. I have finished all the watercolor parts, but painted one accented area of oil paint. I put the paint on quite thick because I did white paint on a white background for a very very faint emphasis. However, now I found a discounted framing price that I want to take advantage of next week...I'm afraid my small area of oil won't dry by then and I need to do one more small touch over the oils once they do dry. Any suggestions for getting the small area to dry faster? It's only about a 1"x3" area on the painting but fairly thick oil. I've heard heat and humidity speed the oil drying process, but I worry about getting it in humidity because of the watercolors. Suggestions, please!