$200
www.greenkarat.com
When CPA Matthew White, now 52, proposed to Bonita Leonard, 48, he tried to find a jeweler that didn't sell gold obtained through traditional mining methods, which damage the ecosystem with cyanide and mercury. The couple wed without rings and founded greenKarat, a jeweler specializing in recycled gold. Located near Houston, greenKarat melts down broken or discarded jewelry and creates custom wedding rings and other baubles. Its hand-cast Lacy Heart Pendant is made of three different colors of recycled 18-karat gold. Buyers can also choose to pay a carbon-offset tax with each purchase.