Should you be on the look out for some nice wedding jewellery with firm eco-credentials, take a look at greenKarat. Alongside more traditional pieces like this canary diamond ring ($975) is the gold or platinum binary ring which is engraved with your text translated into binary.
You can read more about greenkarat's philosophy here.
Related: Silverchilli jewellery - fairtrade loveliness I Taguna nut fairtrade jewellery I More green weddings
From: BEST OF 2008: Eco-friendy and sustainable shoes