CARAT COUNTING: Alek Wek has teamed with De Beers to promote the company’s new diamond brand, Forevermark. The model and handbag designer has designed a one-off diamond necklace and brooch made from nearly 20,000 diamonds weighing 168 carats for the Forevermark Precious Collection, which was unveiled Tuesday in Hong Kong. Wek has dubbed the piece Rose Waterfalls and it’s a suite of three graduated diamond necklaces bearing rose motifs that can be worn together, with a diamond clasp or separately. “Stones are from the ground, so I wanted to choose nature as my theme — the necklace is inspired by roses, waterfalls, rocks and hills,” Wek said. “I wanted to make a piece that was realistic, something I could wear.” So far, the Forevermark collection has only launched in the Far East but will eventually make its debut in Europe and the U.S. as part of a worldwide rollout. Forevermark diamonds, according to De Beers, are ultrahigh-quality stones that are responsibly sourced, have benefited the local communities where they are mined and bear a unique identification number.