You DO know that the bowl link you posted is a glass bowl? It's got clear glass around the midsection.

Check the tile section at the big box stores for grout and colorant. Michael's probably has it, too, but I'm oposed to paying their high prices for such small amounts.

Adhesive depends on indoor or outdoor use of the bowl. Indoors you could use Weldbond, GE Silicone II, or thinset. Same with outdoors minus the Weldbond.

I would seal the bowl with something like stone sealer or marble sealant - something for un-glazed ceramic before gluing and grouting. Again - check the tiling section of the big box stores.

Where is the best place to get small quantities of grout? I don't want huge bags of it laying around. Can I color my own grout? Where can I get the colorant?

You can get a small container of grout and colorant at Michaels. I don't recall having good luck with the colorant but you can ask to see if anyone else around here has.

Michaels is just so expensive for what you get. You will use more than you think, so make enough of the color you want.

Some things mentioned besides the expensive colorants Michaels has have been acrylic paint and even rit dye.Or you can grout white and paint the grout with whatever color (easier that you think, you can just wipe it off the glass). Tinted grout tends ( in my experience) to dry a bit lighter, so don't skimp on the color.
Maria

I didn't know that vase was a glass one. Oh darn - that must be why the little tiles are so luminous. I didn't make it to Michaels today - or HD or Lowe's, I had 9 places to go and by the time I wanted to go I had to come back home, perhaps next week. Have to move all the furniture out of three rooms to get carpet on Monday. Boo Hoo.

I am going to use the bowls inside as decorative pieces. I do have some silicon II, so I might use that or thinset.

Where do folks get their little tiles if they don't get them at Michaels - I want some colorful ones and HD and lowe's only have run of the mill large tiles - I want some of those glass tiles they use in showers?

I have stone sealer left over from laying slate in the living room. I donated all my left over grout and thinset to a local artists group doing a mosiac panel in our town - silly me - now I need some - but that was a good cause. But they came in such big bags. Perhaps I will go and observe some of the artist's work and learn something of value before I attempt my bowls.

thanks for your suggestions.

SPRING, and PHISH: You can get smallish bags of grout at Lowes - I just bought a 10-lb bag of Pearl Gray yesterday. It was just under $10.00. I mix a little black into that to make my charcoal. SPRING: Those are nice, soft colors you have on hand. If you have any old junk jewelry, you could toss some in your mix to add variety. You could also get a couple colorful plates, break them up for shards. There's buttons, natural pebbles, and Walmart carries a few colorful glass globs and squiggles. I hate to see you spend a fortune at Michaels/HobLob on mosaic supplies. The prices are outrageous. On sealing your porous bowl, you can also seal it w/glue and water. I think the recommended porportions are about one part white glue to three or four parts water. I don't measure - use a little more glue than that. It's a good sealer for your bowl as well as terra cotta and wood for inside use. Re adhesive, you can either use silicon (a mess to clean up) or regular white glue. After your bowl is mosaiced, I can see a very decorative piece, that you could perhaps use to fill a collection of, say, shards from a pretty dish, odd pieces you find that you like (I saw some huge glass chunks in a flea mkt. yesterday) some pretty rocks, jewelry on your dresser or whatever. Anxious to see what you do w/you bowls.