A to Z: The Ultimate Luxury Lifestyles List is duPont Registry Tampa Bay‘s annual compendium of the best our region has to offer. Each year we choose a different set of categories and then select businesses that are top-of-the-line in each category. This year: Art to Zinfandel (and everything luxurious in between).

Four fantastic sources of diamonds that dazzle — plus a resource if you’re interested in selling a diamond you already own.

At Mavilo, the promise is clarity — not just in the diamonds they sell, but in their relationships with customers.

At Gold & Diamond Source, the family feeling shines as bright as the merchandise, and the Weintraubs’ generosity to charitable causes adds extra sheen to the brand.

For rings with a unique twist (literally), there’s no place like the Todd Alan Gallery in Sarasota.

And if you’re looking for a ring that glows like the sun, Cappello & Company has a vast collection of yellow diamonds to choose from.

Finally, if you’re not in the market for new jewelry but are interested in selling a piece you already own (or using it as collateral on a loan), contact Diamond Banc; they make the process surprisingly easy, efficient and quick.