18kt rose gold 18kt rose gold Serpent Bohème diamond single earring from Boucheron featuring round cut diamond, pear cut, rhodolite and post-back fastening. Please consider that this is sold as a single earring.. Conscious: 95% of the gold Boucheron uses is recycled, thereby reducing the brand's environmental impact. The remaining 5% is certified Fairmined.. Learn more about what makes a product Conscious on our Conscious Criteria page.