The As Ever founder showed off the accessory for her birthday. Credit: GettyThe GistMeghan Markle rung in her 45th birthday with a new photo shared by her brand As Ever. In the photo, she debuted a new large black and gold ring.She also wore a blue and white striped shirt and white jeans.Meghan Markle has a new bit of bling—and it’s one of the boldest pieces in her collection yet. To mark her 45th birthday, her brand As Ever shared a photo of Me…