18kt yellow gold diamond Serpent Boheme earring from Boucheron featuring 18kt yellow gold, round cut diamonds, pavé setting, lapis lazuli, post-back fastening and for pierced ears. 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..