OK Rahul, your going to need to be more specific than this. Can you send pictures of the room this table is going to be in - does this room connect with a kitchen, or hallway? Photos of those rooms too please, and, what does your dishware look like that is going to sit on this table when you have company over? Photo of that as well. then we get into patterns, colours, textures, dimension, theme, style etc. May I suggest you find an interesting pattern that you must have - this will depict the intricate detail of the pattern needed - check out Sicis.com excellent italian mosaic tile company that will help to inspire your vision for your table. Then google "black and white abstract shapes-patterns", this will help you choose what shapes, patterns you want in your mosaic. Some photos to show you how extensive this is - and you need to give more guidance as to your personal style and preferences before we can help you further. Good Luck! Yes the third image is actually mosaic tile - from Sicis.com

Overallshot

The table would go int he nook. Replacing the round glass top one I have there currently

If I am having trouble finding a rectangle glass top table I usually order the glass from a local (to the location of my Client) glass shop and then the base from one of my furniture vendors. a dark table with your light chairs should not feel dark given that it is in a room with what looks to be lots of light with the large glass door and side window. I do think the glass would be perfect for the area. What size table are you thinking will fit the best in the space and for your needs?