There are so many variations of creating an elegant centerpiece for the main tables, or each table of a wedding reception. With Themed weddings, simple centerpieces work best, since there are colors for the tablecloths, napkins, and floral. If you don't want to use candles, then using battery operated lights also work in the vases, along with adding filmy tulle, or other diaphonous material.
To make this centerpiece, you need 3 to 6 large pillar candles, and a few medium candles, color of your choice, votive candles, lots of glass or plastic faceted beads (plastic is cheaper, but glass looks more elegant. For large centerpiece, set up candles inside of vases, or hurricane lamps, or other crystal type glass receptacle. Arrange in a symmetrical patter, and scatter the "diamonds" all around the candles, including the middle of the arrangemement.
You can also use tulle, or sparkle type materials to accentuate battery operated or even plug in lights, instead of candles.