L.a.brown Playfully named from Lab Grown,L.a.brown is not Gravity, but Attraction. More than Innovation, it’s about Freedom.Welcome to a new era of expressionborn from Science, elevated by Imagination. - Made in Japan.- Karat Necklace 18K Yellow Gold, Charm PT950.- Necklace Length 63cm(approx.), Charm Legth 26.3mm(approx.) Width 9.9mm(approx.)- Emerald Cut Lab Grown Diamond 5.53 ct(Comes with a certificate issued by the international gemological institute IGI.)