Is this for over the island?

Yes, the lighting is for over the island. Thank you for asking

What do you think?

Maybe something like this:

I suggest a single, crystal pendant which mimics the shape of your chandy.

Polished Chrome Riva 2-Light Mini Pendant · More Info

With your two existing chandeliers, I would keep any added lighting very low key. Have you considered adding more recessed lights, perhaps three over the island?

If you know the brand and collection of your chandelier, I would use something within that collection for consistency.

Have you thought about adding lamps with a bit of color like the one pictured?

Light Grey Kitchen Tile | Redwood City, CA · More Info

Best of luck!

You have a lot of things going on in this dining area. I understand the sparkling look but now you need a sleek fixture over the island. A fixture that still exudes elegance-but doesn't fight the two chandeliers. May I suggest this fixture from Elk Lighting-link provided: http://www.lampsusa.com/search?type=product&q=600533l&headersearchbutton=Search#quickview

This fixture will offer plenty of lighting and still offers the dazzle from the metal and the glass shades so you get the best of both worlds-shimmer & shine.