Rio Tinto has always been a forerunner in rare and responsible diamond segment. This time around it’s rare pink diamonds have been combined for the first time with Imperial Jade in a milestone jewellery piece.%% Named as The Argyle Empress, the exquisite necklace is designed by renowned jeweller Chow Tai Fook. With a combination of more than 43 carats of rare Argyle pink diamonds with 33 rare Imperial Jade beads, the necklace is outlandish. The Argyle pink diamonds include five of its signature Pink Tender diamonds, collected over the past five years.%% According to Josephine Johnson, manager of Argyle Pink Diamonds, ''The Argyle Empress is a celebration of two of the earth’s rarest treasures and is a perfect union between East and West. This heirloom piece of jewellery is the first of its kind for the growing Chinese market and will take its place in history as a coveted masterpiece.'' %% Priced at US $5,500,000, The Argyle Empress has been designed around two beautiful pink diamond encrusted flower motifs depicting the Hong Kong Camellia, the perfect counterpoint to the verdant colours of the leaves depicted in the surrounding jade. %%