RAPAPORT... Tiffany & Co., Forevermark and Le Vian were among thebrands celebrities wore at Sunday's Golden Globes awards, with Lady Gaga's opulent display of diamonds stealing the show.Lady Gaga stepped onto the red carpet sporting a Tiffany necklacefeaturing more than 300 diamonds, including a pear radiant-cut, 20-carat centerstone. She also wore Tiffany diamond-cluster earrings, and three Tiffanydiamond bracelets, with her jewelry reportedly worth $5 million. Tiffany custom-made the neckpiece to match Lady Gaga'sbluey-lilac Valentino Couture gown, one of the most acclaimed - andphotographed - fashion items from the ceremony. The star's association with theNew York luxury retailer dates back to her appearance in its debut Super Bowlcommercial in February 2017. "The Tiffany Aurora necklace, specially crafted for LadyGaga and today's Globes, captures the majestic nature of her dress perfectly,"said Sandra Amador and Tom Eerebout, the Golden Globe nominee's stylists. "Whatcould be more fitting than this exquisite custom piece, named after the goddessof dawn, and a cluster of stars, to mark Lady Gaga's wonderful work in AStar is Born?" Sandra Oh, who hosted the awards and won an accolade forbest actress in a television drama, wore a mixture of Forevermark rings,earrings, bracelets and bangles. She sported three different looks for the redcarpet, her opening monologue and when she accepted the award."Forevermark diamonds were not only perfect but felt perfectfor the message: Sandra Oh is a rare, beautiful, smart, talented person," saidher stylist, Elizabeth Saltzman, referring to the De Beers-owned jeweler'sfocus in its branding on empowered female consumers who buy diamonds forthemselves. Forevermark's marketing has targeted that demographic in recentyears in response to an increase in self-purchasing by women.Gemma Chan, who appeared in the Golden Globe-nominated movieCrazy Rich Asians, also wore Forevermark jewelry, including acushion-cut, 11.03-carat diamond ring set in platinum. Actress Allison Janney,who won a Golden Globe in 2018, wore Le Vian ruby and diamond earrings. Images: Lady Gaga (above) and Sandra Oh (below) at the Golden Globes (Getty Images; Forevermark)