UK-based online jewellery e-tailer 77Diamonds offers an extensive selection of fine jewellery on its website, including unique engagement rings, allowing you to choose the cut, colour and clarity of your diamond, natural or lab-grown stones and pick from a choice of settings. The name of the company refers to the first ever proposal made with a diamond ring in 1477 when Archduke Maximillian’s proposed to Mary of Burgundy.