- Mother-of-pearl, total weight: 14.16-carats; blue and pink sapphires, total weight: 2.30-carats; G-H/SI diamonds, total weight: 0.49-carats; blackened diamonds, total weight: 0.05-carats - Lobster clasp fastening - Mother-of-pearl: Australia - The black color of these diamonds is the result of an artificial treatment process - This piece has been certified in accordance with the Hallmarking Act 1973