30 Under 30 2011: Product Slideshow

Gemvara
Courtesy Company
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Gemvara, Matt Lauzon

Coveting Kate Middleton's engagement ring? You can buy it on Gemvara. Or a reasonable facsimile, anyway. The site allows you to customize jewelery according to metal, stone, and design; there are now more than a billion iterations to choose from on the site. Read more.